Guide to Litigating Fireworks & Pyrotechnics Cases

Table of Contents

1. ·Introduction: Everything After Ignition Is Physics
2. 1How These Cases HappenSeven patterns, one spine of written standards.
3. 2The Numbers: Prevalence and SeverityWhat the CPSC, AFSL, and Customs data actually say.
4. 3The Regulatory Stack and the Standard of CareSix layers, from 16 CFR down to the defendant's own paper.
5. 4Engaging the ExpertWhat I deliver, in the order you need it.
6. 5The Plaintiff PlaybookChain of distribution, negligence per se, the permit gap.
7. 6The Defense PlaybookDefend with the file, not with adjectives.
8. 7Storage, Licensing, and HousekeepingWhy "he misused it" is not a defense when the site itself was the hazard.
9. 8The Esparto Case StudySeven workers, one million pounds, a decade of tolerated illegality.
10. 9The Stadium of Fire Case StudySelf-propelled device, sandbag as restraint, and an unlabeled cake in occupied seating.
11. 10Off-Site Harm and the Acoustic GapNeighbors, downwind blast overpressure, and on-site manufacture without a license.
12. 11The Landmark FileStation Nightclub, CPSC injury record, recall history.
13. 12Deposition Question BankThirteen scenarios: misuse, storage, licensing, housekeeping, display failure, off-site harm, on-set, and public-entity.
14. 13The Reference LibraryFederal, consensus, state, and technical.
15. ·Sources and Notes
16. ·About the Author

Everything After Ignition Is Physics

A firework is a small machine designed to fail in a beautiful, controlled way. When it fails in an ugly, uncontrolled way, someone usually had a hand in that failure long before the fuse was lit. The industry and regulators know this. Juries need someone who can explain it in words they can use to decide the case.

I have held an ATF Class 20 explosives license, special-effects and pyrotechnic operator licenses, and a flame-effect operator license. I have designed and fired shows for Disney, Warner Bros., Paramount, and Universal. I founded a school to teach and license pyrotechnicians. I hold a world record for the most explosives fired on a person's body. I have written eleven patents and six books in the field. For more than two decades, I have worked as an expert witness in civil and criminal fireworks, pyrotechnics, fire, and explosion cases for plaintiffs and defendants.

The through-line in every case I have worked is simple: pyrotechnics are chemistry and physics on a timer. They are not mysterious or unpredictable. Written rules govern how a device should behave, where it should be set up and stored, who may touch it, and what its label should say. When a rule is broken and injury or fire follows, the party that shows the jury which rule, in which document, on which page can win the case from either side.

This practice area has two advantages most tort work lacks. First, the regulatory stack is deep and written. Second, the physical evidence endures: burn patterns, mortar tubes, fuse remnants, magazine locks, permit files, and video. An expert can often recover more from a scene at 60 days than from a car crash at 6 hours. This book is a working guide to that discipline.

How These Cases Happen

Every pyrotechnic case I have seen falls into one of seven patterns. The pattern determines the defendants, governing documents, and decisive evidence. Naming it early is the most valuable thing counsel can do in the first 30 days.

1. The Defective Consumer Device

A store-bought firework, fountain, aerial cake, reloadable mortar, or novelty fails in a way it should not. The fuse is short or side-burning. The composition is overloaded with flash powder. A shell fires laterally from the tube. The device tips. The label lacks a required warning, or its certificate of compliance was never valid. Defendants: the importer, distributor, retailer, and sometimes the domestic relabeler. Governing documents: Consumer Product Safety Commission fireworks regulations at 16 CFR Part 1500 and Part 1507, plus American Fireworks Standards Laboratory voluntary standards. The case turns on same-lot exemplars, the certification paper trail, and any domestic recall or Customs refusal-of-entry history.

2. The Misused Consumer Device: Who Enabled the Misuse

An adult holds a mortar. A teenager fires a cake from a rooftop. A child touches a sparkler burning at two thousand degrees. The defense seems obvious: he used it wrong. The plaintiff asks who put a device with a fifteen-second burn time into a market that foreseeably includes drunk adults and teenagers, and who trained the retail clerk on age verification. Foreseeable misuse is not the outlaw defense counsel wishes it were.

3. The Display Gone Wrong

A public display crosses the crowd line. A rack tips. A shell low-breaks. A mortar bursts on the ground. A dud is mishandled during cleanup. Defendants: the operator, sponsor, and venue. Governing documents: NFPA 1123 for outdoor displays and the fire marshal's permit file. The case turns on site measurements, wind data, the debris map, and video. Displays are the pyrotechnic world's best-documented events. Preserve the evidence and it is almost always there.

4. The Indoor and Proximate Effect

A gerb, comet, flame effect, or concussion goes off inside a venue. Something combustible was in its path or too close. Defendants: the pyrotechnic operator, performer, venue, and promoter. Governing document: NFPA 1126 for proximate audience effects, along with the local permit and the venue's materials specifications. This is Station Nightclub territory. The permit file, foam-and-fabric records, and pre-show safety notes control the outcome.

5. The On-Set and Entertainment Effect

Squibs, bullet hits, mortar effects, fire stunts, and flame effects for an audience or camera. Production sets have their own rules: industry safety bulletins and craft rules layered over the state pyrotechnician license. These cases usually turn on who was on the safety chain, signed the safety meeting, cleared the set, entered the exclusion zone, and could stop the shot.

6. The Fire the Firework Started

A device, whether legal or illegal, misused or defective, ignites a house, field, hillside, or car. This is first an origin-and-cause case and second a pyrotechnic case. NFPA 921 governs the investigation; NFPA 1033 governs the investigator's qualifications. The pyrotechnic expert identifies the device from residues, tube fragments, tail fuses, and ignition timing, then gives that identification to the fire investigator to close the loop.

7. The Storage, Transport, and Manufacturing Incident

The device blows up before use, or where it should not be. A magazine cooks off. A trailer catches fire on the interstate. A garage, barn, or rented warehouse, as in the Esparto matter in Chapter 8, proves to be an unpermitted manufacturing and storage operation known for years to neighbors and the county. Defendants: the licensee, property owner, carrier, manufacturer, and increasingly, public agencies with mandatory enforcement duties. Governing documents: 27 CFR Part 555, NFPA 1124, 49 CFR Parts 171-177, and the state fire marshal's licensing file. Here, "he misused it" is no defense because misuse of the finished device was never the issue.

Each pattern has its own defendants and decisive evidence. All share one spine: a written, numeric standard of care that the responsible party either met or did not. That is the case in a sentence.

The Numbers: Prevalence and Severity

In 2024 the Consumer Product Safety Commission counted roughly 14,700 fireworks-related emergency-room visits in the United States and at least 11 fireworks-related deaths, a 52% jump in injuries and a 38% jump in deaths over the prior year, against a background of fireworks imports that grew about 19%. Fireworks litigation tracks the exposure curve, not the calendar.

Who Gets Hurt and How

Burns account for about 37% of ER-treated fireworks injuries. Hands and fingers account for about 36%; head, face, and ears, another 22%. The age profile skews young. Adults 20 to 44 are the largest ER cohort, but children under 15 disproportionately account for sparkler cases. The American Fireworks Standards Laboratory's annual review documents roughly nineteen deaths a year on average in recent years. A sparkler burns at roughly 2,000°F and causes about 1,700 ER visits a year.

The Misuse and Malfunction Split

The CPSC's annual report divides incident causes into malfunctions, including tip-overs, side ignitions, short fuses, and early bursts, and misuse, including holding, aiming at people, altering the device, and lighting multiple items. Product liability lives in the malfunction share. The misuse share raises different questions: whether malfunction and misuse occurred in the same event, whether the label matched the device's behavior in a foreseeable adult's hand, and whether the retailer sold to someone who should not have been able to buy.

Severity, Not Frequency, Drives the Professional Side

Consumer devices generate most cases. Professional events generate most of the money and deaths per incident. The Station Nightclub fire, an indoor proximate effect gone wrong in West Warwick, Rhode Island, in 2003, killed 100 people, injured more than 200, produced roughly $176 million in settlements across roughly 65 defendants, and put the tour manager in prison. That is the shape of a professional-side loss. It is why proximate-effect and display cases command the fees they do.

The Seasonality Nobody Plans For

About two-thirds of consumer fireworks injuries in the CPSC dataset cluster in the four weeks around July 4. Retail, ER, plaintiff, and defense exposure peak together, as have several of the largest storage and manufacturing catastrophes. The Esparto explosion (Chapter 8) occurred July 1, 2025, three days before the holiday for which it was preparing product.

What the Numbers Mean for Case Selection

For the plaintiff bar, consumer product cases are the volume business; display, proximate-effect, and storage cases are the severity business. For the defense bar, assume the jury has seen CPSC injury photos and heard about Station Nightclub before opening statements. Either way, engage an expert early, before perishable evidence starts to disappear: video, debris fields, magazine locks, and permit files.

The Regulatory Stack and the Standard of Care

There are six layers to the standard of care in a fireworks or pyrotechnic case. Each has its own agency, its own document, and its own enforcement history. In a well-worked case, the expert points the jury to the exact provision in the exact layer that answers the question in dispute.

Layer One: Federal Consumer Product Regulation

Consumer fireworks, the devices sold at the roadside tent, are regulated by the Consumer Product Safety Commission under 16 CFR Part 1500 and Part 1507. These rules cover composition limits, fuse burn times, tip-over stability, prohibited chemicals, and required labeling. They apply to the importer and every downstream seller.

Layer Two: Federal Explosives Licensing

Display fireworks, the professional 1.3G product, and all pyrotechnic manufacturing are regulated by ATF under 27 CFR Part 555. Part 555 governs licenses and permits, magazine types (1, 2, 4), storage distances (Table of Distances at §555.218 for high explosives and §555.224 for display fireworks), housekeeping, notification of local fire authorities, record-keeping, and lost-or-stolen reporting. Every professional in this trade is licensed under Part 555 or works under someone who is.

Layer Three: Transportation Classification

All fireworks, consumer and display, are hazard class 1 explosives for transportation under 49 CFR Parts 171-177. Placarding, packaging, driver qualifications, routing, and vehicle segregation are all specified. Truck fires and interstate incidents are almost always transportation-code cases first.

Layer Four: The National Consensus Codes

The NFPA family sets the operational standard of care: NFPA 1123 for outdoor displays; NFPA 1126 for proximate audience pyrotechnics (indoor and close-range); NFPA 1124 for manufacture, transportation, and storage of fireworks and pyrotechnic articles; and NFPA 160 for flame effects before an audience. APA 87-1 is the manufacturer's checklist for display-fireworks construction. These are the documents operators, venues, and manufacturers should follow. OSHA cites NFPA 1124 through 29 CFR 1910.109(b)(1) in manufacturing.

Layer Five: State and Local Law

Every state has its own fireworks law. California's is administered by the Office of the State Fire Marshal and requires SFM classification and licensing of operators (unrestricted and restricted), manufacturers, importer-exporters, wholesalers, retailers, and public display companies (Cal. Code Regs. tit. 19, § 984 and related provisions). Texas's is administered by the State Fire Marshal's Office under 28 Texas Administrative Code Chapter 34. County and municipal codes add zoning, use, and building permits. In storage and manufacturing cases, the local layer often decides the case. A state or federal license may exist, but the local land-use permit for that address rarely does.

Layer Six: The Defendant's Own Paper

Operator's safety plan. Venue's fire watch protocol. Manufacturer's magazine inspection log. Permit application and its representations. Retailer's SOP. Import COAs and certificates of compliance. Insurer's inspection reports. The defendant's own written procedures are almost always the tightest standard in the case, because they are contemporaneous, specific to that operation, and self-imposed.

How to Use the Stack

Start at the bottom: the defendant's own paper. If its SOP required a 300-foot fallout zone and the incident zone was 180, you rarely need to go higher. If the SOP is silent, NFPA supplies the industry standard. If NFPA is silent or nonspecific, federal regulation controls. Negligence per se is available at every layer above the defendant's own paper.

Engaging the Expert

The most valuable moment in a pyrotechnic case is the phone call in the first two weeks. If I am at the scene, reviewing preserved video, or in front of the magazine before debris is bulldozed and the permit file reconstructed from memory, the case is often halfway won for the side that hired me.

What I Deliver: In Order

• Triage. A twenty-minute call identifying the pattern, perishable evidence, and the case's value on the numbers.
• The preservation demand. A written list of devices, tubes, racks, magazines, locks, permits, licenses, video, and paper to preserve, and who must preserve it. In storage cases, the list is longer and more time-critical than in any other pattern.
• The scene reconstruction. Site measurements, debris mapping, magazine and building geometry, distance-table analysis, and, when available, a video timeline matched to physical evidence.
• Exemplar testing. Testing same-lot consumer or professional exemplars under incident conditions, not label conditions.
• The standards mapping. A jury-ready chart tying each incident fact to the provision it violated: CPSC, ATF, DOT, NFPA, state, local, or the defendant's own paper.
• Causation in plain English. A report and testimony that turn chemistry and physics on a timer into a story a lay jury will remember on the third day of deliberation.
• Testimony that survives. Deposition, Daubert, and trial testimony tested thirty-two times for thirty-two wins.

Why Hands Matter More Here Than Anywhere

Pyrotechnics is a hands-on trade. The people who make the device and fire it use the tools every day. A qualified expert must have done it: lit the fuse, poured the composition, packed the magazine, and walked the fallout zone. I have. That lets me tell a jury, without hedging, what the device would have done in a properly built operation and what it did instead.

The Deposition Assist

Before I take the stand, I write deposition outlines for counsel: the fireworks company, operator, licensee, property owner, code enforcement officer, fire marshal, responding investigator, and, when it applies, retailer. Chapter 10 is a working library of those scenario-based outlines.

The Plaintiff Playbook

The plaintiff's job in a pyrotechnic case is not to prove that the device exploded. It is to prove which written rule was broken, by whom, and how the breach reached the plaintiff. Everything else is atmospherics.

Climb the Chain of Distribution

Every consumer device has an importer, at least one distributor, and a retailer. Every professional device has a manufacturer, licensee, and operator. Get the chain in writing early: customs entries, purchase orders, invoices, and COAs. Ninety percent of winnable defendants in a consumer case are upstream of the person who lit the fuse.

Make the Misuse the Defendant's Foreseeability Problem

"He held it in his hand" is not a defense to a device that a foreseeable adult would hold in his hand. Argue foreseeability with the CPSC injury dataset, the AFSL fatality summaries, and, where they exist, the defendant's own consumer complaint records.

Try Display Cases as Geometry

NFPA 1123 gives you distances. The permit gives you a diagram. The debris field gives you truth. Overlay the three on a scaled site plan. If the fallout crossed the crowd line, the case is almost always over on the geometry. Do not let the defense narrate a display accident as bad luck; narrate it as measurement.

Negligence Per Se Is Everywhere in This Field

The regulatory stack is dense enough that defendants in most cases violated a written rule of law, not merely a best practice. In storage and manufacturing cases (Chapter 7), the per se count may alone support summary judgment on liability. Plead the numbered CFR, NFPA, and state fire marshal provisions.

Use the Permit Gap

State licenses are not local permits. ATF licenses are not fire district permits. A defendant who says "we were licensed" often admits only that it had the paper the state requires. Demand the local land-use permit for that address, the certificate of occupancy for that building, the fire district's inspection record, and the AHJ's approval for storage at that quantity. Missing local paper is the most common feature of catastrophic storage cases.

In Ignition Cases, Follow the Device Backward

NFPA 921 origin-and-cause work, plus device identification from residues, tail fuses, and tube fragments, takes you from the burn scar to the retail counter. Most residential and wildland ignition cases live or die on whether that chain closes.

The Defense Playbook

Defending a pyrotechnic case is not defending a bad outcome. It is defending a compliant process. If the process was compliant, the outcome is a tragic accident and the defendant is not responsible. If it was not, the defense must know before the plaintiff does and price and posture the case accordingly.

Defend with the File, Not with Adjectives

The defense that wins is the defense that produces the safety plan, the permit, the inspection log, the training records, the material certifications, the calibration records for the mortars, the wind observations for the show, and the signed safety meeting attendance sheet. The defense that loses is the defense whose file has a hole where any of those documents should be.

Reconstruct Before You Concede the Mechanism

Do not stipulate to the mechanism of injury until an expert has walked the scene, measured the geometry, and inspected the exemplar. In several of my cases, what the complaint called a "malfunction" turned out to be an unrelated ignition source, an altered device, or a misidentified product. In several storage cases, what the plaintiff called a "warehouse" turned out to be a compliant Type 4 magazine that a third party had breached.

Misuse, Modification, and the Intervening Act

Misuse is a real defense when the finished consumer device is the instrumentality and the misuse was not reasonably foreseeable in its market. But it protects only a party with no upstream duty. As Chapter 7 explains, it does not apply when liability rests on storage, licensing, housekeeping, or manufacturing conditions the defendant controlled and the plaintiff was nowhere near.

Compliance as a Sword, Honestly Framed

If the defendant is genuinely compliant, put the licenses, permits, inspection records, safety plan, and training documentation before the jury early. If it is partially compliant, do not oversell. A compliance narrative that cracks on cross does more damage than the underlying gap.

For Operators Reading This Before the Accident

The defensible file starts when you take the job. Photograph the site. Log the weather. Save the permit. Sign in every crew member. Photograph the magazine locks. Save the certificate of compliance. The file built during normal operations will defend you at trial.

Storage, Licensing, and Housekeeping: When "He Misused It" Is Not a Defense

Most fireworks litigation concerns a device in a person's hand. This chapter concerns the other kind: a case in which the device never had a lawful hand to be in because the site was the hazard. When a warehouse cooks off, a magazine is overloaded, or an unlicensed operation catches fire, misuse of the finished device is not at issue. The property owner, licensee, and increasingly, public entities charged with permitting and inspection are responsible under long-standing written, numeric rules.

The defense reflex is to collapse liability into user conduct: he should not have held it, modified it, or stood there. That framing fails when the theory is that the site, storage magazine, housekeeping, licensing posture, or local permit gap was independently unlawful before any device was ignited. This chapter helps counsel keep the case there.

The Four Independent Duty Categories

In every storage-and-manufacture case I have worked, responsible parties owed four duties independent of user conduct. Each has written rules, an inspection paper trail, and its own negligence-per-se count.

1. Storage: How the product is kept

• Magazine type and construction. 27 CFR §§ 555.203-555.213 defines five magazine types. Display fireworks (1.3G) must be stored in Type 4 magazines at minimum; Type 1 or 2 are also acceptable. Bulk salutes, salute components before assembly, or finished salute shells packed separately, are high explosives and must be stored in Type 1 or 2. A Type 4 outdoor magazine must be fire-, weather-, and theft-resistant; constructed of masonry, metal-covered wood, or fabricated metal; hinges and hasps welded, riveted, or bolted from the inside; each door secured with two mortise locks, two padlocks in separate hasps and staples, or a three-point lock; padlocks with five-tumbler cases and 3/8-inch case-hardened shackles under 1/4-inch steel hoods (27 CFR § 555.210).
• Table of distances. 27 CFR § 555.224 sets minimum distances between display-fireworks magazines and inhabited buildings, passenger railways, public highways, and other magazines by net pounds of pyrotechnic composition. NFPA 1124 Chapter 7 imposes parallel and often greater separations at manufacturing sites. In Texas, 28 TAC § 34.822 requires 1.3G and black powder storage to meet or exceed Type 4 in a magazine, with separations under the Chapter 34 distance tables.
• Interior storage rules. Explosive materials must not be placed directly against interior walls; nonsparking material must be used between the product and any wall or floor that would otherwise contact it (27 CFR § 555.207 and § 555.213). Detonators cannot be stored with other explosives except under specific ATF conditions.
• Locked at all times except during authorized activity. Product may not be outside a locked magazine except while in the process of manufacture, being used, being transported, or being physically handled in the operating process (27 CFR § 555.213).
• Inspection interval. Magazines must be inspected at least every seven days for signs of tampering, theft, or damage (27 CFR § 555.204).

2. Housekeeping: How the site is maintained

• Magazine cleanliness. Magazines must be kept clean, dry, and free of grit, paper, empty packages and containers, and rubbish (ATF P 5400.17; 27 CFR § 555.215).
• Clear area. The area around each outdoor magazine must be kept clear of rubbish, brush, dry grass, and trees under 10 feet tall for at least 25 feet.
• Volatile materials. Volatile materials, flammable liquids, gases, and fuel for gasoline-powered equipment must be kept at least 50 feet from outdoor magazines (27 CFR § 555.215).
• Metal tools and floors. Only nonsparking metal tools may be used inside magazines. Floors must be constructed of, or covered with, nonsparking material.
• Manufacturing-site quantity limits. Under NFPA 1124 and ATF interpretation, no more than 10 pounds of flash powder and 500 pounds of other explosive materials may remain outside a magazine in a processing or assembly area during a working day. At day's end, everything returns to an approved magazine.
• No smoking, no open flame, no matches or spark-producing devices in or near the magazine area. Warning signs are required.

3. Licensing: Who is allowed to touch it, and for what

• Federal explosives license. Anyone engaged in the business of importing, manufacturing, dealing in, or otherwise commercially handling explosive materials, including display fireworks, needs a federal license under 27 CFR Part 555. Different license types cover manufacturing, importing, dealing, and permittee (user) activity. The license authorizes only the activities named on it, at the addresses named on it.
• State pyrotechnic operator license. Every state that regulates displays licenses the operator (the person who fires the show) separately. California requires classification of every device by the State Fire Marshal, and licenses pyrotechnic operators, manufacturers, importer-exporters, wholesalers, retailers, and public display companies under Health & Safety Code § 12500 et seq. and Cal. Code Regs. tit. 19, § 984 et seq. Unrestricted pyrotechnic operators must pass a written examination and prove experience.
• Category matching. A state license is granted for a specific class of product. A California pyrotechnic operator or importer license for one class does not authorize importation, possession, or sale of a different classification (for example, a Cal Fire license that does not authorize DOT 1.3G is not a license to import 1.3G). Importation paperwork must be filed with the State Fire Marshal in advance.
• Local permit at the address. Even a fully federally and state-licensed operator generally may not store commercial-grade product at a property that is not locally permitted for that use. The certificate of occupancy, the zoning designation, and any conditional use permit control what activities are lawful at that address.
• Reporting duties. Notification of local fire authorities is required orally by the end of the day storage begins, and in writing within 48 hours (27 CFR § 555.201). Any theft or loss of explosive materials must be reported to ATF within 24 hours by telephone and in writing (27 CFR § 555.30).

4. Worker Safety: How employees are protected

• Injury and Illness Prevention Program. Cal/OSHA (8 CCR § 3203) and OSHA generally require an effective, written IIPP. Federal OSHA cites serious violations of NFPA 1124 under 29 CFR 1910.109(b)(1).
• Hazard communication. Employees who handle explosive materials must be told, in a language they understand, what the hazards are, how to identify them, and how to respond.
• Fire prevention plan and training. Employees must be trained on the fire prevention plan, on the use of fire extinguishers, and on emergency evacuation procedures.
• Personal protective equipment and safety equipment. Where hot work, spark potential, or thermal exposure is present, appropriate PPE and fire-suppression equipment must be provided and inspected.
• Wage and hour compliance. Not a pyrotechnic rule per se, but wage-and-hour violations, cash payments off the books, off-the-clock work, and altered time records often accompany operations most likely to cook off. They create separate causes of action.

Why "He Misused It" Fails in These Cases

Misuse concerns the causal chain between the responsible party and injury. It says the injured party's conduct interrupted a chain that otherwise ran to the defendant. It presupposes the defendant complied in designing, warning, selling, and instructing on the finished device. When the site was independently noncompliant before ignition, misuse of the finished device is not on the causal path.

Consider a barn storing a million pounds of 1.3G product with no Type 4 magazine, in the wrong zoning district, without a local permit, fire-district notification, written fire-prevention plan, or employee training, and with volatile materials beside pyrotechnic composition. If something ignites it, whether a spark from an angle grinder, a hot day, static from a repackaging table, or a dropped case, the injury did not result from misuse of the ignition source. It resulted from a site that was a magazine and never should have existed. This is a premises and licensing case. The finished device was not the instrumentality.

The plaintiff's brief should tie each negligence-per-se count to a written rule governing the site, not user conduct: 27 CFR § 555.210 (magazine construction), § 555.215 (housekeeping), § 555.201 (notification), § 555.204 (weekly inspection), § 555.224 (distances), the state fire marshal license file, the local certificate of occupancy, NFPA 1124 Chapters 5-8, 8 CCR § 3203 (IIPP), and the property's zoning designation. None depends on how an individual handled a device.

The Public-Entity Overlay

Where public officials had mandatory permitting, inspection, or enforcement duties and failed to perform them, they are also on the causal path in a growing number of jurisdictions. California Government Code § 815.6 imposes public-entity liability for injury proximately caused by failing to discharge a mandatory duty under an enactment designed to protect against the risk of the injury suffered. When the local fire district, county code-enforcement office, and state fire marshal knew of an unpermitted commercial-grade fireworks operation and did not shut it down, the plaintiff has a mandatory-duty theory against them alongside claims against private operators. The Esparto litigation in Chapter 8 is the current textbook example.

The Storage-Case Preservation List

Within the first two weeks:

• All federal explosives licenses and applications (ATF Forms 5400.13/5400.16 and any amendments)
• State fire marshal license file, including importation notifications and any suspension or revocation history
• Local land-use permit, certificate of occupancy, and zoning designation for the address
• Fire district inspection reports and correspondence for the address
• County code enforcement complaints, correspondence, and inspection records for the address, including any emails referencing the ownership of the property
• All magazine locks, hasps, and doors, preserved intact, not cut off
• Magazine inspection log required by 27 CFR § 555.204
• Purchase, import, and sales records required by 27 CFR §§ 555.121-555.127
• Employee training records, IIPP, fire prevention plan, and hazard communication documentation
• Payroll records, time records, and any indicia of cash payment
• All video from neighboring properties, doorbell cameras, traffic cameras, and, if available, satellite imagery of the site over the preceding three years
• All email and text traffic between the operators and any public officials

The Esparto Case Study

On July 1, 2025, at approximately 6 p.m., a fire ignited in a warehouse at 18080 County Road 86A in Esparto, Yolo County, California. Multiple explosions followed. Seven workers, Carlos Rodriguez Mora, Jhony Ramos Jr., Jesús Manaces Ramos, Angel Voller, Christopher Goltiao Bocog, Joel Jeremias Melendez, and Neil Justin Li, were killed. Two other people were injured. The blast started the Oakdale Fire, which burned roughly 78 acres of neighboring farmland. It was three days before the Fourth of July, and the operation on that property was preparing product for shows across the region.

The Esparto case illustrates the paper trail of licensing, permitting, and enforcement that a storage-and-manufacture matter can turn on. The public record includes allegations, citation findings, indictments, and a civil grand jury report relevant to Chapter 7's four duty categories. This chapter describes those materials without offering an opinion on the merits of any pending claim or charge.

Storage Issues Alleged in the Public Record

• Magazine and container practices. The families' complaint alleges that fireworks were stored outside approved magazines, in improperly spaced storage containers, and without required signage or fire-suppression equipment. An investigation would compare the materials, quantities, container construction, and spacing with the applicable requirements, including 27 CFR § 555.224 and NFPA 1124.
• Quantity and distance. The indictments allege that the site held more than a million pounds of fireworks. Discovery would need to establish the classifications and net explosive weights of the materials, the location of each container, and the applicable table-of-distances calculations.
• Repackaging and assembly. The complaint alleges that the site was used to "store, assemble, repackage, and process fireworks and explosives." An expert would need to examine what work was performed, the governing licenses, and the construction, siting, and distance requirements that applied to that work.
• Materials near a residence. The public record identifies an occupied dwelling on the property and includes child-endangerment and animal-cruelty counts. The relevant questions include what materials were present near the dwelling, in what quantities, and at what distances.

Cal/OSHA Findings

Cal/OSHA opened an investigation after the blast. On December 1, 2025, it issued 15 citations to Devastating Pyrotechnics Inc. totaling approximately $221,000 in proposed penalties: 14 serious and one regulatory. The notice identified three violations as directly related to the fatal event. The cited findings included:

• Failure to establish, implement, and maintain an effective Injury and Illness Prevention Program (8 CCR § 3203)
• Failure to provide adequate procedures for identifying workplace hazards and conducting periodic inspections to detect unsafe conditions related to the storage and handling of pyrotechnic materials
• No review of a fire prevention plan with employees, and no communication of the hazards of handling and storing the fireworks, "as a result the fire and explosion at the facility occurred"
• Fire extinguishers were present at the worksite where pyrotechnic materials were handled and stored, but employees had received no instruction on how or when to use them
• Failure to provide effective training on working with hazardous materials, including on the forklifts and other equipment used at the facility
• Failure to immediately report the seven fatalities to the agency, as required
• Absence of required signage, hazard communication protocols, and worker PPE

Licensing Issues Alleged in the Public Record

• Federal licensing. The indictment alleges that Gary Chan Jr. held the federal ATF license and that operational control of the site rested with Kenneth Chee. It further alleges that Chee's Cal Fire licenses did not authorize import, possession, or sale of DOT 1.3G product.
• State fire marshal actions. State Fire Marshal records reflect that the two companies' fireworks licenses were suspended after the blast. The stated bases included failure to submit required importation paperwork, failure to report missing fireworks, and possession of fireworks without required local permits. Both companies' licenses listed the Esparto address as the licensed business location.
• Local land-use approval. The plaintiffs' complaint alleges that, although the companies held certain state and federal licenses, the property was not locally approved for the activities at issue. The local permit file, land-use approvals, and correspondence would need to be examined.
• Sales allegations. The indictment alleges that Tollefsen imported and sold consumer explosives under the private label "For the Streets." It also charges Chee with three counts of insurance fraud tied to the operation.

The Yolo County Civil Grand Jury Report and Related Allegations

In March 2026, the Yolo County Civil Grand Jury issued a report titled "Officials Knew, None Acted." The following are stated findings of that report, not adjudicated findings in the pending cases:

• Local officials had been aware of the pyrotechnics operation for years, at least since 2022.
• Building services officials went to inspect the site, but internal emails instructed them to "tread lightly as the property was owned by sheriff's deputies."
• No enforcement actions or citations were issued after that inspection.
• Sheriff Tom Lopez had previously worked with Samuel Machado at the neighboring Madison Fire Protection District.
• Tammy Machado's sister, Rieko Matsumura, was a sheriff's deputy assigned to Esparto and on disability leave before the explosion.
• The Board of Supervisors had fostered a "culture of tolerance" for code violations and a "laissez-faire" attitude toward new businesses and construction in unincorporated areas.
• The county code-enforcement department was understaffed, and rural fire districts lacked adequate training and prevention resources.
• The Office of the State Fire Marshal was aware, through seizure activities dating to 2023, of the volumes of fireworks the report described as entering the state.

The families' consolidated complaint, filed in San Francisco Superior Court on July 23, 2026, makes related allegations against public and private defendants. The report, the complaint, inspection records, and agency correspondence are all potential subjects of discovery.

The Criminal Case

On April 3, 2026, a Yolo County criminal grand jury returned two indictments spanning 35 felony counts against eight defendants. On April 10, seven were arrested; an eighth was already in custody. Five defendants, Kenneth Kin Chee, Jack Y. Lee, Gary Y. Chan Jr., Douglas Michael Tollefsen, and Samuel Elmo Machado, each faced seven second-degree-murder counts, plus counts involving possession and transport of explosive or destructive devices, unlawfully causing a fire, dangerous workplace, insurance fraud, and tax fraud. Machado also faced charges for assault weapons, child endangerment, and animal cruelty. Tammy Machado was charged separately with mortgage fraud, tax fraud, child endangerment, and animal cruelty. Craig Cutright and Ronald Botelho III were charged with conspiracy and making destructive devices without a permit. Several defendants face life in prison if convicted. California permits a second-degree-murder charge when death occurs during a dangerous felony and the defendant was a major participant acting with reckless indifference to human life.

The Civil Case

Etta James Farming LLC filed the first civil action in Yolo County Superior Court on July 18, 2025, seeking crop and infrastructure losses (24 acres of wheat and 50 acres of canario beans burned). In December 2025, the seven decedents' families filed a $35 million governmental claim against Yolo County, the Office of the State Fire Marshal, and several public officials before filing suit. On July 23, 2026, families of six decedents, neighboring landowners, and family trusts filed a consolidated complaint in San Francisco Superior Court. It names more than two dozen defendants: OSFM and State Fire Marshal Daniel Berlant; Yolo County and three county employees; the Yolo County Sheriff's Office and Sheriff Tom Lopez; the Esparto Fire Protection District and Fire Chief Curtis Lawrence; Devastating Pyrotechnics and Blackstar Fireworks; and all eight criminal defendants. It pleads 17 causes of action, including negligence for breach of mandatory governmental duties, fraud, nuisance, negligent hiring and supervision, wrongful death, premises liability, emotional distress, and wage-and-hour claims against private companies for cash payment, off-the-clock work, and manipulated time records.

The Stadium of Fire Case Study

On the evening of July 4, 2024, a thirty-six-shot self-propelled whistle device was placed in the bleachers of LaVell Edwards Stadium in Provo, Utah. It sat four rows below the top of the south end zone, in occupied spectator seating, held by a sandbag. Six or seven of the thirty-six tubes fired vertically as designed. Whistle composition in two tubes then underwent an uncontrolled deflagration, broke the housing, and pushed the sandbag three to four inches out of position. The remaining tubes discharged along the new angle. Twenty-two self-propelled whistles traveled horizontally into the stands. Twenty-seven people were injured, four struck directly by devices. In July 2026, roughly a dozen plaintiffs filed two actions: one in Utah state court against America's Freedom Festival, the State of Utah, Provo City, Utah County, and BYU; another in the District of Utah against the festival and a fireworks company.

Stadium of Fire illustrates the range of technical and regulatory questions a display-fireworks matter can raise. The public record and the Fire Marshal's report raise questions about the firing position, the restraint of a chain-fused device, separation distance, product selection, composition, labeling, permitting review, importer and operator identity, and prior-incident notice. The questions require documents, physical evidence, and qualified analysis before anyone offers a case-specific opinion.

Questions Raised by a Display-Device Failure

• What was the device's classification, intended effect, and manufacturer-stated firing configuration?
• What was the firing position, and what clear space existed on every bearing from that position?
• How was the device mounted or ballasted, and what loads could the setup withstand during the firing sequence?
• What product information, labels, and lot records were available to the people who selected, transported, stored, permitted, and fired the device?
• What relationship, if any, existed among the manufacturer, importer, warehouse, wholesaler, and display operator?
• What did the permitting authority receive, review, inspect, and approve?
• What records exist concerning the reported 2010 malfunction at the same event?

Separation Distance and Fallout Area

Separation distance and fallout area are radial concepts. A site review measures clear space from the firing position on every bearing, not only in the intended direction of travel. NFPA 1123 uses a seventy-feet-per-inch rule for shells, which yields a 210-foot radius for a three-inch shell. The Provo Fire Marshal's post-incident recommendation was an 800-foot minimum for devices of this class.

An expert would examine the site plan, seating map, device specifications, effect height, firing position, and measured distances to occupied areas. The inquiry also requires the code edition, locally adopted provisions, permit conditions, and any instructions supplied with the product.

Mounting and Restraint

A sandbag is ballast. It adds weight, but it may slide if the surface or applied forces permit movement. A mounting review considers the device's geometry, the surface beneath it, the direction and magnitude of anticipated loads, the duration of the firing sequence, and the capacity of the mounting method to maintain the intended firing angle.

NFPA 1123 addresses a related condition for racks holding chain-fused mortars: when the rack's strength is in doubt, the spectator separation distance doubles, measured for the largest mortar in the sequence. Whether that provision applies to a particular device depends on the device classification and setup. The Provo Fire Marshal's post-incident report describes the sandbag as moving three to four inches. An expert would examine the photographs, video, physical evidence, and measurements needed to assess the significance of that observation.

Whistle Composition and the Physics of a Tube Event

Whistle composition is among the trade's more sensitive materials. It commonly combines potassium perchlorate with a benzoate or salicylate fuel and is pressed into a consolidated grain inside a tube. It burns at the grain's surface in a rapid oscillation that couples acoustically to the tube. The oscillation produces the sound, and the burn rate depends on surface area.

Particle-size changes can alter surface area. Such changes may occur during manufacture, handling, or transport and may be evaluated through physical examination and testing. If a grain breaks down substantially, it can burn differently from an intact whistle grain. In a confined tube, a rapid pressure-producing event can damage the tube or housing. The Provo Fire Marshal's post-incident report identified composition breakdown into smaller particles as the most probable cause and listed tube damage and gaps in packing material as possible contributors. That is the report's stated assessment; an independent opinion would require the underlying evidence and appropriate testing.

Product Selection as a Safety Decision

Product selection is a safety decision. The selection process considers the device's intended effect, its labeling and instructions, the site, the firing position, the available separation distance, and credible deviations from normal performance. A self-propelled device raises questions about travel direction and range that should be addressed in the site and product review.

Public reporting states that, for the 2025 display, the festival hired a new vendor, did not use this device again, and barred self-propelled rockets from the stadium. Those later measures do not determine the appropriate conclusion about the 2024 event. They are part of the public chronology.

The Reported Absence of a Label

Product labels and accompanying documents commonly identify the manufacturer, importer, classification, lot, instructions, and safety information. Those materials inform product selection, permitting, transport, storage, mounting, and separation-distance analysis. Public reporting described the device as bearing no label. An expert would examine recovered fragments, packaging, shipping papers, inventory records, photographs, and any product approval documents to determine what information was available and to whom.

The Kansas Warehouse

In fireworks matters, the identity of the warehouse and the corporate relationship among the importer, wholesaler, custodian, and display operator can matter to chain-of-custody and document review. One open question in Stadium of Fire is the corporate relationship between the warehouse referenced in the Fire Marshal's report and the display operator. The report reportedly found no evidence that the device was mishandled between a warehouse in Kansas and the event. Discovery would need to produce the warehouse records, corporate records, inventory records, shipping documents, and chain-of-custody evidence necessary to evaluate that statement.

Notice From the Prior Malfunction

The Fire Marshal is reported to have stated that a similar malfunction occurred at the same event in 2010. The questions that report raises are whether the earlier event involved a self-propelled or whistle device, what was documented about it, what was determined at the time, what measures were considered or adopted afterward, and whether the pertinent records were available to later decision makers.

Permitting Review of the Product List

A permitting authority may review a product list, site plan, and firing plan before approving a display. The Provo Fire Marshal's post-incident recommendation called for detailed product lists. An expert would examine the permit application, the product list submitted with it, review notes, conditions of approval, inspection records, and any communications about the firing position or device selection. Those records would show what information was before the permitting authority and what was reviewed.

Off-Site Harm and the Acoustic Gap: The PGI/Brainerd Case Study

Most fireworks litigation concerns people inside the fence: spectators, crew, and participants whom the code is written to protect. A second class concerns people outside it: neighbors on whose property displays drop debris, residences where blast overpressure from a large salute arrives half a mile downwind, and properties beside unlicensed on-site manufacture of pyrotechnic composition. This chapter addresses that class. Its framing case is the 2024 Pyrotechnics Guild International convention at Brainerd International Raceway, Minnesota. A resident living roughly one-half mile east of the raceway reported hearing loss and property debris from one detonation at 5:02 p.m. on Thursday, August 8, 2024, the rescheduled midweek public-display night.

The Acoustic Gap in the Display Code

Search the 2022 body text of NFPA 1123 for noise, sound, sound pressure, decibel, hearing, ear protection, hearing protection, and acoustic. It returns nothing. The code's only acknowledgment of acoustics is its definition of a salute as fireworks designed to produce explosive sound as their primary effect. That absence makes these cases difficult and cuts both ways.

Against the plaintiff. There is no code distance derived from hearing conservation, and no code required the operator to compute a sound level at a neighbor's house. No display-code separation-distance provision is violated merely by producing sound.

Against the defense, and more powerfully. Display-code separation distances address falling debris, thermal hazard, and fragments. They were never designed to protect hearing, and no one should say they do. A distance that keeps burning paper off a spectator's shoulder says nothing about pressure at a bedroom window a half mile downwind. Compliance with a debris standard is not compliance with an acoustic one; there is no acoustic one. The absence of a rule is not permission. Minnesota Rules 7030.0040 subp. 1 confirms the point: its noise standards "do not, by themselves, identify the limiting levels of impulsive noise needed for the preservation of public health and welfare."

The Closest Regulatory Analogue: Airblast at a Dwelling

Because no fireworks standard sets a pressure limit at a residence, the useful comparison comes from the one federal rule that does. 30 CFR § 816.67(b)(1)(i) limits the airblast generated by surface-mine blasting at the location of any dwelling, public building, school, church, or community or institutional building outside the permit area:

Section 816.67(b)(2)(i) requires periodic compliance monitoring. It is the right comparison for four reasons: it measures the same quantity, unweighted peak overpressure from an impulsive detonation; it measures at the same place, a private dwelling; the source is controlled and scheduled by the operator; and it includes a monitoring duty. A fireworks operator firing large salutes near homes should be held to that practice.

Two occupational criteria supply the hearing benchmark. OSHA 29 CFR 1910.95, Table G-16 Footnote 1, says exposure to impulsive or impact noise should not exceed 140 dB peak sound pressure level. OSHA has clarified that this means unweighted peak measured with a meter's true-peak function, not A-weighted. NIOSH Publication 98-126 sets the same ceiling. Both are occupational limits, not law for a neighbor. They are hazard benchmarks and should be presented as such.

Salute and Ground-Salute Charge Limits

NFPA 1123 § 4.1.7.5: ground salutes shall not exceed three inches in diameter and length; salute powder shall not exceed 2.5 oz (71 g); and construction must use paper or equivalent material, not metal or brittle plastic. Section 4.1.7.1 limits single-break aerial salute shells to five inches in diameter and length. Section 4.1.7.3 limits salutes over three inches to licensed operators or designated agents of licensed companies. American Pyrotechnics Association Standard 87-1B, incorporated by reference into federal hazardous-materials regulations, sets the same 71 g manufacturing ceiling. A single report is limited to 71 g per tube or shell; multiple reports, to 25 g each and 75 g per device. Two independent standards, written by different bodies for different purposes, reach the same number.

Seventy-one grams is 2.5 ounces, just over five-sixteenths of a pound. A twenty-three-pound ground salute, like those in convention video, is roughly 145 times that. Neither standard permits it. The organization's competition rules do not close the gap. They cap ground-competition reports at 2.5 by 2.5 inches outside diameter and permit them only in the "unlimited" category. They cap competition aerial shells at eight inches single break. They say nothing about ground salutes fired outside competition on open member ranges, where the video shows them. That silence is itself a finding.

The Fallout Area: When Debris Lands Off Site

NFPA 1123 § 3.3.11 defines the fallout area as the designated area in which hazardous debris is intended to fall. § 5.1.5.1 requires the fallout area to be an open area. § 5.1.5.2 prohibits spectators, unauthorized vehicles, watercraft, or readily combustible materials in the fallout area during the display. § 8.1.4.3.1 requires the spotter to stop firing if hazardous debris falls into the audience. § 8.2.8 requires the first shell to be observed to determine whether it functions over the fallout area and whether any hazardous debris or unexploded shells land in it.

Three features control when debris lands off site. The fallout area is designated: someone must choose it in advance. It must be open, which private residential property is not. It must be controllable, because the code requires the operator to keep it clear, watch the first shell land there, and stop firing if debris leaves it. An area you do not own, cannot clear, inspect, or see is not a fallout area. It is somewhere else.

On-Site Manufacture and the Missing Personal-Use Exemption

Federal explosives law contains no personal-use exemption for manufacturing display fireworks. 27 CFR § 555.11 defines a manufacturer as "any person engaged in the business of manufacturing explosive materials for purposes of sale or distribution or for his own use." § 555.41(b) requires a license before commencing business. The statutory exemptions in 18 U.S.C. § 845 do not include personal manufacture of display fireworks. § 555.141 exempts consumer (1.4G) fireworks. Display (1.3G) fireworks are not exempt. ATF told the Pyrotechnics Guild International so directly at that organization's own 2012 convention: on the slide addressing the tribal exemption, ATF stated that the exemption "does not exempt the manufacturing of fireworks."

Classification matters. 27 CFR § 555.202(b) classes display fireworks as low explosives, except for bulk salutes. § 555.202(a) classes flash powders and bulk salutes as high explosives. The composition in a salute is regulated more strictly than the shell it goes into, and the storage table for display fireworks at § 555.224 expressly does not apply to bulk salutes: those go to the high-explosives table at § 555.218 instead. Quantity limits at the process building: § 555.221(b), no more than 500 pounds of pyrotechnic composition or explosive materials in any mixing, preparation, or assembly building; § 555.221(c), the maximum quantity of flash powder permitted in any fireworks process building is 10 pounds; § 555.221(d), all dry explosive powders and mixtures, partially assembled display fireworks, and finished display fireworks shall be removed from process buildings at the conclusion of a day's operations and placed in approved magazines. Notification: § 555.201(f) requires oral notification to the local fire safety authority before the end of the day storage commences, and written notification within 48 hours, of the type, magazine capacity, and location of each site.

When an event's website says it "provides facilities for members to conduct fireworks manufacturing activities," and a local sheriff's incident report confirms the office understood that devices were being built, on-site manufacture is not disputed. The documents can answer whether each person making composition held a federal explosives license, flash powder stayed below the 10-pound-per-building limit, material was magazined each day, the local fire safety authority received the required § 555.201(f) notification, and bulk-salute distances under § 555.218 were met.

Downwind Propagation and Terrain

Downwind refraction bends sound rays back toward the ground and raises received levels at distance. The blasting literature documents increases of 8 to 15 dB downwind, with reinforcement in excess of 20 dB recorded in some cases. A large water surface within a quarter mile of a receiver is a hard acoustic reflector and adds to the received level. A temperature inversion, when present, is an additional enhancement. When the wind direction is steady from the source toward occupied homes for an entire firing window, over flat terrain with under a few feet of relief, every physical condition favors carrying both debris and pressure from the source to those homes. A competent operator accounts for the conditions on the day: wind direction and speed determine where debris travels and how far sound carries.

Notice From an Event's Own Complaint History

An organization must act on its incident and complaint history. Notice of harm requires a corrective measure, maintained. After residents near an event's Wisconsin venue lodged hundreds of noise complaints and threatened litigation in 2022, the organization moved its 2023 convention. Oshkosh and Neenah residents then reported the same harms after relocation. At its 2019 Wyoming convention, a device broke through a house roof two miles from the grounds and started a fire; debris from the event started two grass fires. In Brainerd, the sheriff's office received noise complaints after the August 4, 2024 public display, four days before the August 8 incident, and the sheriff publicly said he was working with the organization on hours. An organization with that record owes surrounding property owners a specific, documented reassessment during the week. It bears the burden of producing one.

Local Permitting for a Site Outside a Municipality

The permitting authority for a display outside an incorporated city differs from the authority inside. In Minnesota, Minn. Stat. § 624.22 subd. 1(c) directs the application to the county auditor; the county sheriff conducts the investigation that a city fire chief would conduct. Minn. R. 7511.5608 adds a specific inventory requirement: the application "shall include the number, type and size of the fireworks to be discharged." That inventory is the most valuable document in a case like this. Subdivision 6 of § 624.22 requires the certified operator to report in writing to the State Fire Marshal within ten days of any display injury, fire or property damage, or unsafe or defective pyrotechnic product or equipment used or observed. Every state has some version of three requirements: a permit inventory, a designated investigating officer, and a post-incident report. Their paper trail is the plaintiff's roadmap.

The Medical Vulnerabilities of an Acoustic-Trauma Claim

Candor about plaintiff-side weaknesses in an acoustic-trauma claim strengthens everything else. The treatment window is 24 to 72 hours; delays of days weaken causation. No prior audiogram is the largest evidentiary vulnerability because a middle-aged claimant may have age-related hearing loss whether or not anything exploded nearby. Without a baseline, no one can separate the two. The recognized industry position is that noise-induced loss is usually bilateral. It shows a notch at 3, 4, or 6 kHz with recovery at 8 kHz, does not exceed about 75 dB in high frequencies, and does not progress after exposure stops. Any departure will be attacked. Pull every prior audiogram: employment hearing-conservation programs, military service, and primary care.

Two physical points bear on medical work. An intact eardrum does not rule out cochlear injury. The published human threshold for tympanic-membrane rupture is around 5 psi (~185 dB), with 50 percent rupture at about 14.5 psi. That is roughly 45 dB above the level at which impulse noise becomes hazardous to the inner ear. The thresholds are far apart; an expert who argues that "no rupture means no injury" confuses them. A bystander at distance is a recognized injury population. A 2023 study of fifty patients treated for firework-associated acoustic trauma over one New Year period found that thirty (60 percent) were bystanders, not the person lighting the device. It found tinnitus in 64 percent, hearing loss in 56 percent, and tympanic-membrane perforation in only 2 of 50.

The Overpressure Estimate as a Demonstrative, Not a Measurement

The most useful demonstrative in an off-site acoustic case compares what the code allows with what the record indicates was fired, expressed as the distance at which each device reaches the 140 dB peak contour. These sample values use the empirical relation between charge weight and the 140 dB contour from measured detonations. They are order-of-magnitude analysis, not measurement:

All values are free-field, before adjustment for downwind reinforcement or ground reflection from a device fired at grade. Finish the case with an instrumented reconstruction: fire devices of the identified class from the identified position and measure at the receiving property with a Type 1 sound-level meter recording unweighted true peak. Present the arithmetic honestly, disclose every assumption, and let the reconstruction supply the jury's numbers.

The central finding in a case like this is that distance did not change between a compliant device and a non-compliant one: the composition weight did. Everything else, including pressure at the house and debris on the deck, follows arithmetically from the composition weight in the device. Device identification is not a detail. It is the case.

The Landmark File

Three files anchor most pyrotechnic litigation: one reset the professional side after 2003; one runs annually and appears in every consumer case; and one shapes enforcement expectations at Customs and CPSC.

Deposition Question Bank

This is my working library of deposition outlines for the case patterns in this book: thirteen scenarios covering consumer misuse; storage, licensing, and housekeeping; professional displays; indoor and proximate pyrotechnics; on-set effects; ignition-source and public-entity theories; and, new to this edition, display-device failure in occupied seating and off-site harm from blast overpressure or debris fallout. The outlines are organized by scenario, not witness. Pick the scenario that fits, then map the questions to available witnesses. Each begins from the plaintiff's angle; defense reversals appear where they change the pattern. Nothing replaces tailoring to the facts of a particular case.

The Reference Library

These are the documents I keep within arm's reach on every case. They are cited by category, not author. Check the edition in force on the date of loss.

Federal Law and Regulation

• Consumer Product Safety Commission fireworks regulations at 16 CFR Part 1500 (hazardous substances) and Part 1507 (fireworks devices); CPSC Fireworks Annual Report.
• ATF explosives regulations at 27 CFR Part 555, especially Subpart K (Storage): §§ 555.201 (notification), 555.203-555.213 (magazine types and construction), 555.210 (Type 4), 555.213 (storage limitations), 555.214 (interior storage), 555.215 (housekeeping), 555.218 (Table of Distances, high explosives), and 555.224 (Table of Distances, display fireworks); Subpart G (Records), §§ 555.121-555.127; and Subpart B (Reports), § 555.30 (lost/stolen).
• ATF P 5400.7 Federal Explosives Laws and Regulations; ATF P 5400.17 Explosives Magazine Construction; ATF Ruling 2007-2 (temporary storage of display fireworks); ATF Ruling 2009-2 (bulk salutes).
• Department of Transportation hazardous-materials regulations at 49 CFR Parts 171-177, hazard class 1 (explosives), covering placarding, packaging, driver qualification, routing, and segregation.
• OSHA Explosives and Blasting Agents standard at 29 CFR 1910.109; OSHA Compliance Policy CPL 02-00-073 for fireworks manufacturers, citing NFPA 1124 through § 1910.109(b)(1).
• California Government Code § 815.6 (public entity liability for breach of mandatory duty).
• Off-site harm and acoustic exposure. 30 CFR § 816.67 (surface-mining airblast limits at a dwelling, 129 to 134 dB peak, and a periodic-monitoring duty); OSHA 29 CFR 1910.95 Table G-16 fn. 1 (140 dB peak SPL ceiling for impulsive noise, unweighted, true-peak measurement); NIOSH Publication 98-126 (same 140 dB peak ceiling); 27 CFR § 555.11 (manufacturer includes manufacture for own use, with no personal-use exemption for display fireworks); § 555.41(b) (license before commencing); § 555.141 (consumer/1.4G exemption does not reach 1.3G display fireworks); § 555.202 (bulk salutes classed as high explosives); § 555.218 (high-explosives table of distances for bulk salutes); § 555.221 (500-lb process-building limit, 10-lb flash-powder limit, and end-of-day magazine-return duty); and § 555.201(f) (fire-safety-authority notification on storage).

The National Consensus Codes

• NFPA 1123, Code for Fireworks Display (outdoor displays).
• NFPA 1126, Standard for the Use of Pyrotechnics Before a Proximate Audience (indoor/close-range effects).
• NFPA 1124, Code for the Manufacture, Transportation, and Storage of Fireworks and Pyrotechnic Articles.
• NFPA 160, Standard for the Use of Flame Effects Before an Audience.
• NFPA 921, Guide for Fire and Explosion Investigations; NFPA 1033, Standard for Professional Qualifications for Fire Investigator.
• APA 87-1 (and 87-1B), Standard for Construction and Approval for Transportation of Fireworks, Novelties, and Theatrical Pyrotechnics (American Pyrotechnics Association), incorporated by reference into federal hazardous-materials regulations; it caps a single report at 71 grams per tube or shell and a multiple-report device at 75 grams.
• NFPA 1123, especially § 4.1.7 (salute and ground-salute limits); § 5.1.3 (display-site radius of 70 ft per inch of internal mortar diameter); § 5.1.5 (fallout area: designated, open, controllable); § 5.2.1.1 (spectator separation distance); § 8.1.4.3.1 (spotter cease-fire duty when hazardous debris enters the audience); and § 8.2.8 (first-shell observation).

State, Local, and Industry Practice

• California: Health & Safety Code §§ 12500 et seq.; Cal. Code Regs. tit. 19, § 984 et seq. (Office of the State Fire Marshal); local fire district and county code enforcement records.
• Texas: 28 Texas Administrative Code Chapter 34 (Fire Prevention), including § 34.822 (Storage of Black Powder and Fireworks 1.3G at Other Than Display Sites) and § 34.824 (Distance Tables); State Fire Marshal's Office.
• Local jurisdiction: county land-use permits, certificates of occupancy, zoning designation, fire district inspection records, code enforcement files.
• Cal/OSHA Injury and Illness Prevention Program requirements (8 CCR § 3203).
• Entertainment: Contract Services safety bulletins for film and television (bullet hits, squibs, pyrotechnics, fire, and prop weapons); IATSE and PGI craft practice.
• Manufacturer product data sheets, certificates of compliance, importer testing records, and internal safety manuals.

The Technical Literature

• Pyrotechnic chemistry and shell construction: Lancaster's Fireworks: Principles and Practice; Conkling & Mocella's Chemistry of Pyrotechnics; and Shimizu's Fireworks: The Art, Science and Technique.
• Fire investigation: NFPA 921 and 1033; Icove & DeHaan, Kirk's Fire Investigation.
• Author's own published training materials for licensed pyrotechnicians and special-effects operators (see About the Author).

Sources and Notes

This edition draws on the U.S. Consumer Product Safety Commission Fireworks Annual Report (2024 data, published June 2025); American Fireworks Standards Laboratory annual fatality and injury analyses; U.S. Census Bureau fireworks import data; public records, civil filings, and criminal dispositions in State v. Great White and related Station Nightclub litigation; ATF explosives regulations at 27 CFR Part 555 and associated rulings and publications (P 5400.7 and P 5400.17); National Fire Protection Association codes 1123, 1124, 1126, 160, 921, and 1033 (the edition in force on the date of loss controls); the California Office of the State Fire Marshal fireworks program and Cal. Code Regs. tit. 19 § 984 et seq.; 28 Texas Administrative Code Chapter 34; the March 2026 Yolo County Civil Grand Jury report "Officials Knew, None Acted"; Yolo County District Attorney criminal-grand-jury indictments (April 3, 2026); Cal/OSHA's December 1, 2025 Citation and Notification of Penalty to Devastating Pyrotechnics Inc. (15 citations, approximately $221,000 in proposed penalties); civil complaints filed in Yolo County Superior Court (Etta James Farming LLC, July 2025) and San Francisco County Superior Court (families of six decedents, July 23, 2026); and reporting from the Sacramento Bee, KCRA, CBS Sacramento, KTVU, ABC7 Bay Area, CapRadio, KQED, and Fire Law Blog.

Chapter 9 (Stadium of Fire) draws on the Salt Lake Tribune (July 3, 2026), KPCW (July 7, 2026), Deseret News (February 19, 2025), Daily Herald (February 19, 2025), Fox 13, KUTV, KSL, and Gephardt Daily reporting on the Provo Fire Marshal's February 2025 final report; the Utah State Fire Marshal's adopted code list effective July 1, 2023; its published list of licensed fireworks importers and wholesalers; Utah Administrative Code R710-2; NFPA 1123 (2018 edition); the 2021 International Fire Code as adopted in Utah; and the author's preliminary expert-witness analysis of the Stadium of Fire display failure, prepared before engagement in July 2026 on the author's initiative.

Chapter 10 (Off-Site Harm and the Acoustic Gap) draws on the author's preliminary expert-witness analysis of an off-site acoustic-trauma and debris-fallout claim from the 51st annual Pyrotechnics Guild International convention at Brainerd International Raceway, Minnesota (August 3-10, 2024), prepared before engagement in August 2026; NFPA 1123 (2022 edition); American Pyrotechnics Association Standard 87-1B; 27 CFR Part 555, especially §§ 555.11, 555.41(b), 555.141, 555.201(f), 555.202, 555.218, 555.221, and 555.224; 30 CFR § 816.67 (federal surface-mining airblast limits at a dwelling); OSHA 29 CFR 1910.95 and NIOSH Publication 98-126 (140 dB peak criterion for impulse noise); Minnesota Statutes §§ 624.20-624.25; Minnesota Rules chapters 7511 (state fire code) and 7030 (noise); the Crow Wing County Sheriff's Office incident case report 24013494; contemporaneous reporting from Brainerd, Oshkosh, Kaukauna, and Gillette; and peer-reviewed medical literature on acoustic trauma from fireworks exposure.

Nothing in this book is legal advice. Check standards in the edition in force on the date of loss.

Steve Wolf

Steve Wolf holds an ATF Class 20 explosives license, a special-effects and pyrotechnic operator license, and a flame-effect operator license. He is a member of the Pyrotechnics Guild International and IATSE and founded Pyro School, a licensed pyrotechnician training school. He holds a world record for the most explosives fired on a person's body and has been the subject of documentary and press coverage as a hands-on pyrotechnic and special-effects practitioner.

Wolf's professional work includes effects for Disney, Warner Bros., Paramount, and Universal. He is the author of eleven patents and six books. His production and safety practice includes Team Wildfire and Wildfire Labs, and he hosts "The Fire Break" podcast on fire and pyrotechnic safety. He served as an expert witness in the on-set shooting investigation of Rust. In more than two decades of civil and criminal expert-witness engagements for plaintiffs and defendants, every matter in which he has been retained has resolved for the retaining party, including one of New Mexico's largest verdicts at $66.5 million. He is a Columbia University graduate.

The Wolf Safety Series includes Practice Safe Sets, Firearms Safety On Set, Deadly Hospital Mistakes, Getting Your Pyro License, The Secret Science Behind Movie Stunts and Special Effects, and A Day in the Life of a Stunt Person.