Construction (29 CFR 1926)

General Provisions for Blasting (Construction)

Verified vs OSHA sources · 2026-10-05

29 CFR 1926.900

29 CFR 1926.900 sets the general provisions for blasting and the use of explosives in construction (Subpart U). Its foundational rule is that only authorized and qualified persons may handle and use explosives, and it establishes the basic safe-practice requirements (controlling ignition sources, prohibiting smoking near explosives, protecting against stray current, and following safe procedures) that underpin the more specific construction blasting rules.

29 CFR 1926.900 at a glance

What it covers: General provisions for blasting and use of explosives in construction
Who handles explosives: Only authorized and qualified persons
Ignition control: No smoking or ignition sources near explosives
Electric blasting: Protection against stray and radio-frequency current
Part of: Subpart U: Blasting and the Use of Explosives
Max penalty (2026): $16,550 per serious violation; $165,514 per willful

What 29 CFR 1926.900 requires (plain English)

29 CFR 1926.900 contains the general provisions for blasting and the use of explosives in construction: the opening section of Subpart U, which governs how explosives are transported, stored, handled, and detonated on construction sites (tunneling, quarrying, demolition, and excavation blasting).

The section's foundational requirement is that the employer permit only authorized and qualified persons to handle and use explosives. From there it sets basic safe practices: prohibiting smoking, firearms, matches, open flames, and other ignition sources near explosives; protecting electric blasting circuits against stray current, static electricity, and radio-frequency energy; requiring that explosives be accounted for and unused explosives returned to storage; and other precautions against accidental initiation.

1926.900 is the general provision; the specific requirements follow: surface transportation (1926.901–.902), storage (1926.904), loading and firing (1926.905–.909), and inspection after blasting (1926.911). Together with the general-industry explosives standard (1910.109) and DOT/ATF rules, it forms the framework that keeps construction blasting under the control of qualified people and away from ignition sources.

The regulatory text

“The employer shall permit only authorized and qualified persons to handle and use explosives.”

29 CFR 1926.900(a)

Key facts about 29 CFR 1926.900

Only authorized and qualified persons may handle and use explosives (1926.900(a)).
Smoking and ignition sources are prohibited near explosives.
Electric blasting circuits must be protected against stray and radio-frequency current.
It is the general-provisions section of Subpart U (construction blasting).
Specific rules follow for transport, storage, loading, firing, and post-blast inspection.
Unused explosives must be accounted for and returned to storage.
It works with the general-industry explosives standard (1910.109).

Scope: who 29 CFR 1926.900 applies to

Regulatory framework: Construction (29 CFR 1926)
Citation reference: 29 CFR 1926.900
Enforcement status: In force and enforced
Jurisdiction: Federal OSHA (29 State-Plan jurisdictions may be stricter)

State-Plan states (e.g. California, Washington, Michigan) operate OSHA-approved programs that must be at least as effective as federal OSHA and frequently impose higher penalties or additional requirements. Confirm the rule as adopted in your state.

Key requirements of 29 CFR 1926.900

#	Employer obligation
1	Use only licensed blasters
2	Store explosives in approved magazines
3	Post warning signs and barricades
4	Clear blast area before detonation
5	Account for all explosives

Summarized from the text of 29 CFR 1926.900. Always read the full regulation for the binding language.

Common Blasting (Construction) violations

Deficiencies OSHA cites under 29 CFR 1926.900 include the ones below, in no particular order. Distinct deficiencies can be cited as separate items, and each serious item carries up to $16,550 (2026). Broader per-instance stacking exists but is a discretionary, case-by-case OSHA enforcement policy, not an automatic multiplier.

Unauthorized or unqualified persons handling or using explosives (1926.900(a)).
Smoking or ignition sources near explosives (1926.900).
Electric blasting circuits not protected from stray or radio-frequency current (1926.900(k)).
Unused explosives not accounted for or returned to storage (1926.900).
Unsafe handling practices during loading or firing: 1926.905–.909.

"Authorized and qualified" is a real limit, not anyone can help with explosives

A dangerous shortcut on blasting jobs is using general laborers to help place, connect, or handle explosives because the crew is short-handed. 1926.900 is explicit: the employer may permit ONLY AUTHORIZED AND QUALIFIED persons to handle and use explosives. "Qualified" means trained and experienced in the safe handling and use of explosives; "authorized" means the employer has specifically permitted them. An extra pair of hands who is neither is a violation and a grave hazard: explosives handling errors cause premature detonations, misfires, and mass-casualty incidents. The whole framework depends on keeping explosives in the control of qualified blasters, which is why this is the first general provision.

What OSHA inspectors look for

A compliance officer checks that only authorized, qualified persons handle and use explosives, that smoking and ignition sources are controlled near explosives, that protection against stray and radio-frequency current is provided for electric blasting, and that safe handling practices are followed. Unqualified handlers and uncontrolled ignition sources are the classic findings.

Example: how a violation is cited

An untrained laborer is directed to help place and connect explosive charges, and a mistake causes a premature or misfire hazard. OSHA cites 1926.900 for permitting an unauthorized, unqualified person to handle and use explosives, with penalties from $16,550, often elevated given the catastrophic potential.

Illustrative example, not a specific OSHA case.

Blasting (Construction) compliance checklist

Use this to evaluate your compliance with 29 CFR 1926.900. Each item is a key requirement OSHA may verify during an inspection.

Permit only authorized, qualified persons to handle and use explosives.
Prohibit smoking, open flames, and ignition sources near explosives.
Protect electric blasting circuits from stray, static, and radio-frequency current.
Account for all explosives and return unused ones to storage.
Follow the specific transport, storage, loading, and firing rules of Subpart U.
Coordinate with the explosives storage requirements (1910.109) and DOT/ATF rules.

2026 penalties for 29 CFR 1926.900

Maximums set by 29 CFR 1903.15(d). 2026 amounts unchanged from 2025 (no CPI adjustment; OMB M-26-11). Not an increase. The 2025 OSHA penalty levels remain in effect for 2026; OSHA made no inflation adjustment for 2026. 29 CFR 1903.15 identifies January 15, 2025 as the effective reference for these amounts, while OSHA's public penalties page currently references penalties assessed after Jan. 15, 2026.

Violation type	Minimum	Maximum	When it applies
Serious	$1,085	$16,550	Substantial probability of death or serious physical harm.
Other-Than-Serious	$0	$16,550	Relates to safety/health but unlikely to cause death or serious harm.
Willful	$11,823	$165,514	Intentional, knowing, or voluntary disregard of the requirement.
Repeated	$4,256	$165,514	A substantially similar violation cited within the last 5 years.
Failure to Abate	None	$16,550/day	up to $16,550 per day; total capped at 30x the daily amount (FOM Ch.6)

Construction blasting violations are cited seriously given the catastrophic potential. Serious violations reach $16,550 and willful or repeat violations $165,514.

Maximums and the willful minimum are set by 29 CFR 1903.15(d); the serious and repeated minimums are OSHA policy floors from its annual penalty adjustment memo. OSHA applies gravity-based and size, good-faith and history reductions (FOM CPL 02-00-164 Ch.6). Estimates only, not legal advice.

The business case for Blasting (Construction) compliance

Construction blasting turns a jobsite into a place where a handling error can detonate explosives and kill many. 1926.900's first principle (only authorized, qualified persons handle and use explosives) plus its controls on ignition sources and stray current, keep explosives in the hands of people trained to manage them and away from the heat, spark, and current that cause accidental initiation. It is the foundation the detailed blasting rules build on.

Free compliance tools for 29 CFR 1926.900

Job Hazard Analysis Builder Pre-Task Plan Generator Hot Work Permit Generator

Blasting (Construction) penalties by state

Penalties and enforcement vary by state. State-Plan states may impose higher penalties and additional requirements beyond federal 29 CFR 1926.900.

Alabama Arkansas Colorado Connecticut Delaware District of Columbia

View all 50 states + DC →

Frequently asked questions about 29 CFR 1926.900

Who can handle explosives on a construction site?

Under 1926.900, only authorized and qualified persons may handle and use explosives. "Qualified" means trained and experienced in the safe handling and use of explosives, and "authorized" means the employer has specifically permitted them. Using general laborers or untrained workers to help with explosives is a serious violation.

What does Subpart U cover?

Subpart U, Blasting and the Use of Explosives, covers explosives on construction sites: 1926.900 (general provisions), transportation (1926.901–.902), storage (1926.904), loading and firing (1926.905–.909), and inspection after blasting (1926.911). 1926.900 is the general-provisions section that sets who may handle explosives and the basic safe practices.

Why are ignition sources controlled around explosives?

Because explosives can be initiated by heat, spark, flame, or stray electrical current. 1926.900 prohibits smoking, open flames, and other ignition sources near explosives and requires electric blasting circuits to be protected from stray, static, and radio-frequency current. Controlling every potential ignition source is essential to preventing accidental detonation.

How does 1926.900 relate to 1910.109?

1926.900 is the construction blasting standard (Subpart U), while 1910.109 is the general-industry explosives and blasting agents standard. They are complementary: construction blasting operations follow Subpart U for handling, loading, and firing, while explosives storage draws on the magazine and quantity-distance requirements. Both restrict explosives to authorized, qualified persons.

Regulatory history of 29 CFR 1926.900

The construction blasting general provisions (1926.900) were part of OSHA's original construction standards (Subpart U) adopted in the early 1970s, drawing on the Institute of Makers of Explosives and NFPA guidance. The authorized-and-qualified-persons rule has always been the cornerstone of construction explosives safety.

Related glossary terms

Key terms that appear in 29 CFR 1926.900, each with a full plain-English explainer.

Qualified Person Competent Person Struck-By Hierarchy of Controls

Related guides & articles

OSHA Chemical Storage Requirements Complete Guide OSHA Safety Training Requirements 2026

Related OSHA standards

29 CFR 1910.101

Compressed Gases

29 CFR 1910.106

Flammable Liquids

29 CFR 1910.107

Spray Finishing

29 CFR 1910.109

Explosives & Blasting

Primary sources

OSHA figures on this page are imported from HazComFast's verified regulatory module (verified 2026-10-05 against eCFR, OSHA.gov, and the Federal Register).

This page is an educational summary, not legal advice. OSHA standards and penalty amounts change; confirm requirements against the current regulation and your applicable State-Plan before acting.

Get the Binder in Order Before the Inspector Arrives. Are You Ready?

OSHA does not give advance notice of inspections (29 CFR 1903.6). Get the binder in order before the opening conference, not during it.

Serious Violation

$16,550

per violation (max)

HazComFast Pro

$199/mo

10 jobsites, unlimited chemicals, unlimited workers

Use the free tools View Pricing

New sign-ups are paused. The free tools below need no account, and customers can log in as usual.

Your account keeps working as usual. Cancel anytime.