Safety Incidents OSHA Severe Injury Reports · 2015–2025
5,189,992Inspections Most recent open 2026-07-18 Last loaded 2026-07-22

OSHA Inspection: MOUNTAIN CITY SUPPLY, LLC

Complaint inspection · Health discipline

On , OSHA opened a complaint health inspection of MOUNTAIN CITY SUPPLY, LLC in 647 SOUTH GILBERT STREET UNIT 102, CASTLE ROCK, CO 80104 (NAICS 325920). OSHA activity number 345751622.

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employer broke any rule; any findings appear as the citations listed below, and citations can be contested, reduced, or withdrawn.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
647 SOUTH GILBERT STREET UNIT 102
City
CASTLE ROCK
State
CO
ZIP
80104
Mailing
647 SOUTH GILBERT STREET UNIT 102, CASTLE ROCK, CO 80104
Inspection type
Complaint (B)
Scope
Complete (A)
Discipline
Health
Advance notice
No
Union status
B
Opened
Closing conference
Case closed
Last modified
Data loaded
NAICS code
325920
Employees
26
Ownership type
A

6 citations on file for this inspection.

1910.119 D

Other-than-serious Gravity 5 1 instance 10 exposed
Issued
May 11, 2022
Abate by
Dec 15, 2022
Penalty
Initial $7,252 · Current $5,000 Reduced
29 CFR  1910.119(d): The employer did not complete a compilation of written process safety information (PSI) pertaining to the hazards of the highly hazardous chemicals of the process, technology of the process and equipment in the process:  a)  On or about January 27, 2022, and at times prior, Mountain City Supply, LLC, did not ensure a compilation of written PSI was completed that is to require the following information:     1.  A block flow diagram or simplified process flow diagram;  2.  Maximum intended inventory of primers and smokeless propellant;  3.  An evaluation of the consequences of deviations including those affecting the health and safety of employees;  4.  Piping and instrument diagram of the building fire suppression system;  5.  Electrical classification of the building; and   6.  Safety systems.  b)  On or about January 27, 2022, and at times prior, Mountain City Supply, LLC, did not document that equipment of the process, as it relates to the possession and use of explosives as well as the manufacture of small arms ammunition, complies with recognized and generally accepted good engineering practices (RAGAGEP) such as, but not limited to:    1.  Department of Defense (DOD) Standard for Ammunition and Explosives Safety, DoD 6055.09-STD;   2.  National Fire Protection Association (NFPA) 495, Explosive Materials Code; and    3.  National Fire Protection Association (NFPA) 77, Recommended Practice on Static Electricity.
Recent events (2)
  • — I (O) $5000
  • — Z (S) $7252

1910.119 E01

Other-than-serious Gravity 5 1 instance 10 exposed
Issued
May 11, 2022
Abate by
Dec 15, 2022
Penalty
Initial $0 · Current $0
29 CFR 1910.119(e)(1): The employer did not perform an initial process hazard analysis (hazard evaluation) on processes covered by 29 CFR 1910.119:  a)  On or about January 27, 2022, and at times prior, Mountain City Supply, LLC, did not perform an initial process hazard analysis on ammunition manufacturing operations using Mark 7 and Camdex autoloaders.  Lack of process hazard analyses potentially puts employees at risk of explosion/fire hazards as they would not be aware of some or all of the critical failure points while performing daily ammunition reloading tasks.  During this process, employees are exposed to explosive chemicals including, but not limited to, nitroglycerin and nitrocellulose.
Recent events (2)
  • — I (O) $0
  • — Z (S) $0

1910.119 F01

Other-than-serious Gravity 5 1 instance 10 exposed
Issued
May 11, 2022
Abate by
Dec 15, 2022
Penalty
Initial $0 · Current $0
29 CFR 1910.119(f)(1): The employer did not develop and implement written operating procedures that provided clear instructions for safely conducting activities involved in each covered process consistent with the process safety information and which address the elements listed in 29 CFR 1910.119(f)(1)(i) through (f)(1)(v):   a)  On or about January 27, 2022, and at times prior, Mountain City Supply, LLC, did not develop and implement written operating procedures that provided clear instructions in regard to process safety management for ammunition manufacturing that used highly explosive powder constituents.  Employees were potentially exposed to explosive/fire hazards due to a lack of operating procedures for tasks, including but not limited to, primer loading and ammunition manufacturing.
Recent events (2)
  • — I (O) $0
  • — Z (S) $0

1910.119 G01 I

Deleted Serious Gravity 5 1 instance 10 exposed
Issued
May 11, 2022
Abate by
Jun 14, 2022
Penalty
Initial $0 · Current $0
29 CFR  1910.119(g)(1)(i):  Each employee presently involved in operating a process, and each employee before being involved in operating a newly assigned process, shall be trained in an overview of the process and in the operating procedures as specified in paragraph (f) of this section. The training shall include emphasis on the specific safety and health hazards, emergency operations including shutdown, and safe work practices applicable to the employee's job tasks:  a) On or about January 27, 2022, and at times prior, Mountain City Supply, LLC, did not ensure each employee involved in ammunition and primer loading were trained in the overview and operating procedures of the process.
Recent events (2)
  • — I (S) $0
  • — Z (S) $0

1910.119 N

Serious Gravity 5 1 instance 10 exposed
Issued
May 11, 2022
Abate by
Dec 15, 2022
Penalty
Initial $0 · Current $0
29 CFR 1910.119(n): The employer did not establish an emergency plan for the entire plant in accordance with the provisions of 29 CFR 1910.38 and 29 CFR 1910.120:  a)  On or about January 27, 2022, and at times prior, Mountain City Supply, LLC, did not establish an emergency action plan in accordance with the provisions of 29 CFR 1910.38 and 29 CFR 1910.120.  Employees were potentially exposed to explosion/fire hazards from explosive powder and primer constituents used in ammunition manufacturing, including but not limited to, nitroglycerin and nitrocellulose while loading ammunition and primers in Mark 7 and Camdex autoloaders.
Recent events (2)
  • — I (S) $0
  • — Z (S) $0

1910.1200 E01

Other-than-serious 1 instance 10 exposed
Issued
May 11, 2022
Abate by
Jun 14, 2022
Penalty
Initial $0 · Current $0
29 CFR  1910.1200(e)(1): The employer did not develop, implement and maintain at the workplace, a written hazard communication program which at least describes how the criteria specified in paragraphs (f), (g) and (h) of this section for labels and other forms of warning, material safety data sheets, and employee information and training will be met:  a) On or about January 27, 2022, and at times prior, Mountain City Supply, LLC, did not develop and implement a written hazard communication program that specifically addresses paragraphs (f), (g) and (h) of the section for employees who are required to work with explosive chemicals in high concentrations such as, but not limited to, nitroglycerin and nitrocellulose while engaged in ammunition and primer loading operations.
Recent events (2)
  • — I (O) $0
  • — Z (O) $0

View Mountain City Supply, LLC's full OSHA safety record →

This record is reproduced from the U.S. Department of Labor Open Data API (OSHA inspection dataset). The original IMIS detail view is available at OSHA's Establishment Search for activity number 345751622.

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