Safety Incidents OSHA Severe Injury Reports · 2015–2025
5,194,531Inspections Most recent open 2026-08-11 Last loaded 2026-08-14

OSHA Inspection: CASTLEROCK EXCAVATION

Planned inspection · Safety discipline

On , OSHA opened a planned safety inspection of CASTLEROCK EXCAVATION in 615 N 19TH ST, BILLINGS, MT 59101 (NAICS 237110). OSHA activity number 342450350.

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employer broke any rule; any findings appear as the citations listed below, and citations can be contested, reduced, or withdrawn.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
615 N 19TH ST
City
BILLINGS
State
MT
ZIP
59101
Mailing
6765 TRADE CENTER AVE, BILLINGS, MT 59101
Inspection type
Planned (H)
Scope
Partial (B)
Discipline
Safety
Advance notice
No
Union status
Non-union (B)
Opened
Closing conference
Case closed
Last modified
Data loaded
NAICS code
237110
Employees
25
Ownership type
Private (A)

4 citations on file for this inspection.

1926.303 B01

Serious Gravity 5 1 instance 4 exposed
Issued
Oct 27, 2017
Penalty
Initial $2,463 · Current $1,232 Reduced
29 CFR 1926.303(b)(1): Grinding machines shall be equipped with safety guards in conformance with the requirements of American National Standards Institute, B7.1-1970, Safety Code for the Use, Care and Protection of Abrasive Wheels, and paragraph (d) of this section:    a) 6th Ave N Trench: On or about July 6 2017, and at times prior, employees were exposed to lacerations while using the unguarded DeWalt 4 1/2 inch right angle grinder (model # DC411, serial # 308718) to cut sewer pipe.
Recent events (2)
  • · I (S) $1231.5
  • · Z (S) $2463

1926.651 K02

Serious Gravity 5 2 instances 4 exposed
Issued
Oct 27, 2017
Penalty
Initial $3,078 · Current $1,539 Reduced
29 CFR 1926.651(k)(2): Where the competent person found evidence of a situation that could result in possible cave-in, indications of failure of protective systems, hazardous atmospheres, or other hazardous conditions, exposed employee were not removed from the hazardous area until the necessary precautions have been taken to ensure their safety.      a) 6th Ave N Trench: On July 6, 2017, and at times prior, the employer certified on the Daily Trenching Log that; the soil classification was class "C" with wet soil conditions, that the trench would reach depths of approximately six feet and five feet in width, excavated material was two feet from the edge of the excavation, ladders were within twenty five feet of the employees, and that trench boxes would be the protective systems used. Employees were allowed to enter the excavation to install a new sewer line without any of these necessary precautions in place.     b) Headstart Trench: On July 6, 2017, and at times prior, the employer certified on the Daily Trenching Log that; the soil classification was class "C" with wet soil conditions, that the trench would reach depths of approximately six feet and five feet in width, excavated material was two feet from the edge of the excavation, ladders were within twenty five feet of the employees, and that trench boxes would be the protective systems used. Employees were allowed to enter the excavation to install a new sewer line without any of these necessary precautions in place.
Recent events (2)
  • · I (S) $1539
  • · Z (S) $3078

1926.652 A01

Serious Gravity 5 2 instances 4 exposed
Issued
Oct 27, 2017
Penalty
Initial $3,078 · Current $1,539 Reduced
29 CFR 1926.652(a)(1): Each employee in an excavation shall be protected from cave-ins by an adequate protective system designed in accordance with paragraph (b) or (c) of this section:    a) 6th Ave Trench: On or about July 6, 2017, and at times prior, employees were exposed to cave-in hazards while tying into existing water lines in a trench that approximately seven feet in depth.    b) Head Start Trench: On or about July 6, 2017, and at times prior, as the controlling employer did not ensure that Star Services, Inc. employees were not exposed to cave-in hazards while tying into existing water lines in a trench that was approximately six feet in depth.
Recent events (2)
  • · I (S) $1539
  • · Z (S) $3078

1926.251 C16

Other-than-serious 2 instances 4 exposed
Issued
Oct 27, 2017
Penalty
Initial $0 · Current $0
29 CFR 1926.251(c)(16): Wire rope slings did not have permanently affixed, legible identification markings stating size, rated capacity for the type(s) of hitch(es) used and the angle upon which it is based, and the number of legs if more than one:  a) 6th Ave Trench: On or about July 6 2017, and at times prior, the employer failed to affix load rating tags to wire rope slings.
Recent events (2)
  • · I (O) $0
  • · Z (O) $0

View Castlerock Excavation'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 342450350.

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