Safety Incidents OSHA Severe Injury Reports · 2015–2025
5,197,549Inspections Most recent open 2026-08-27 Last loaded 2026-08-31

OSHA Inspection: HALVORSON MASON CONSTRUCTORS

Complaint inspection · Safety discipline

On , OSHA opened a complaint safety inspection of HALVORSON MASON CONSTRUCTORS in LIBBY DAM POWER HOUSE, Libby, MT 59923 (NAICS 000000). OSHA activity number 217746031.

What this inspection record means

OSHA opens inspections for many reasons: routine scheduling under a national or local emphasis program, an employee complaint or referral, or a follow-up after a reported injury. Opening or conducting an inspection is not itself an allegation or a finding that this employer broke any rule; any findings appear as the citations listed below, and citations can be contested, reduced, or withdrawn.

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Site address
LIBBY DAM POWER HOUSE
City
Libby
State
MT
ZIP
59923
Inspection type
Complaint (B)
Scope
Complete (A)
Discipline
Safety
Union status
Non-union (B)
Opened
Closing conference
Case closed
Data loaded
NAICS code
000000
SIC code (legacy)
1623
Employees
305
Industry flags
Construction safety.

15 citations on file for this inspection.

1910.212 A01

Other-than-serious 7 instances
Issued
Jul 25, 1974
Abate by
Aug 26, 1974
Penalty
Initial $50 · Current $50

1910.23 A09

Other-than-serious 1 instance
Issued
Jul 25, 1974
Abate by
Jul 29, 1974
Penalty
Initial $35 · Current $35

1926.250 B08 I

Other-than-serious 1 instance
Issued
Jul 25, 1974
Abate by
Jul 29, 1974

1926.303 D

Other-than-serious 2 instances
Issued
Jul 25, 1974
Abate by
Aug 26, 1974

1926.304 F

Other-than-serious 1 instance
Issued
Jul 25, 1974
Abate by
Oct 29, 1974
Penalty
Initial $50 · Current $50

1926.350 J

Other-than-serious 9 instances
Issued
Jul 25, 1974
Abate by
Jul 29, 1974

1926.400 A 011017

Other-than-serious 1 instance
Issued
Jul 25, 1974
Abate by
Jul 29, 1974

1926.402 A11

Other-than-serious 1 instance
Issued
Jul 25, 1974
Abate by
Jul 29, 1974

1926.500 D02

Other-than-serious 1 instance
Issued
Jul 25, 1974
Abate by
Jul 29, 1974
Penalty
Initial $30 · Current $30

1926.600 A02

Other-than-serious 1 instance
Issued
Jul 25, 1974
Abate by
Aug 26, 1974
Penalty
Initial $50 · Current $50

1926.602 A02 I

Other-than-serious 1 instance
Issued
Jul 25, 1974
Abate by
Aug 26, 1974
Penalty
Initial $35 · Current $35

1926.700 B02

Other-than-serious 1 instance
Issued
Jul 25, 1974
Abate by
Aug 26, 1974
Penalty
Initial $90
Recent events (2)
  • · Z (O) $90.00
  • · F (O)

1926.701 A03

Other-than-serious 2 instances
Issued
Jul 25, 1974
Abate by
Jul 29, 1974

1904.2 A

Other-than-serious 5 instances
Issued
Jul 25, 1974
Abate by
Sep 30, 1974
Penalty
Initial $120 · Current $120

1926.25 A

Repeat 3 instances
Issued
Jul 25, 1974
Abate by
Jul 29, 1974
Penalty
Initial $180 · Current $180

View Halvorson Mason Constructors's full OSHA safety record →

This record is reproduced from the U.S. Department of Labor Open Data API (OSHA inspection dataset). OSHA publishes its own view of this case as inspection number 217746031.

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