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

OSHA Inspection: MERSEN USA ST. MARYS-PA CORPORATION

Referral inspection · Safety discipline

On , OSHA opened a referral safety inspection of MERSEN USA ST. MARYS-PA CORPORATION in 1032 TROUT RUN ROAD, SAINT MARYS, PA 15857 (NAICS 335991). OSHA activity number 341053072.

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employer broke any rule; any findings appear as the citations listed below, and citations can be contested, reduced, or withdrawn.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
1032 TROUT RUN ROAD
City
SAINT MARYS
State
PA
ZIP
15857
Mailing
215 STACKPOLE STREET, SAINT MARYS, PA 15857
Inspection type
Referral (C)
Scope
Partial (B)
Discipline
Safety
Advance notice
No
Union status
A
Opened
Closing conference
Case closed
Last modified
Data loaded
NAICS code
335991
Employees
135
Ownership type
A

1 citation on file for this inspection.

5(a)(1)

Serious Gravity 5 1 instance 4 exposed
Issued
Mar 10, 2016
Abate by
Jun 28, 2016
Penalty
Initial $4,675 · Current $2,900 Reduced
OSH ACT of 1970 Section (5)(a)(1): The employer did not furnish employment and a place of employment which were free from recognized hazards that were causing or likely to cause death or serious physical harm to employees:     A.)  Mersen USA St. Marys-PA Corporation, 1032 Trout Run Road, St. Marys, PA  15857, Department 40, on or about November 12, 2015 and times prior thereto:  Employees were potentially exposed to fire and explosion hazards from dust collectors located outside the building near the entrance / exit door to Department 40.  The Ultra Industries dust collector for Department 40 was located outside the building near the entrance / exit door to Department 40, and was not equipped with devices to mitigate a potential dust explosion.  The dust collector collected dust from materials including, but not limited to, carbon graphite.     B.)  Mersen USA St. Marys-PA Corporation, 1032 Trout Run Road, St. Marys, PA  15857, Department 40, on or about November 12, 2015 and times prior thereto:  Employees were potentially exposed to fire and explosion hazards from dust collectors that were not equipped with devices and systems to prevent the propagation of explosions and associated flame fronts from the dust collector through the associated dust collection system duct work.  The Ultra Industries dust collector at Department 40 was not equipped with approved devices to prevent the propagation of a dust explosion and associated flame fronts throughout the dust collection system and the associated duct work.  The dust collector collected dust materials including, but not limited to, carbon graphite.
Recent events (2)
  • — I (S) $2900
  • — Z (S) $4675

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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 341053072.

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