Safety Incidents OSHA Severe Injury Reports · 2015–2025
5,189,214Inspections Most recent open 2026-07-16 Last loaded 2026-07-20

OSHA Inspection: MASON W. INC.

Planned inspection · Safety discipline

On , OSHA opened a planned safety inspection of MASON W. INC. in 5440 PHILADELPHIA AVE., CHINO, CA 91710 (NAICS 722210). OSHA activity number 342199882.

Watch Mason W. INC. — free Get an email when a new federal OSHA severe-injury report for Mason W. INC. is published. One employer, no account, unsubscribe in one click.
Establishment
MASON W. INC.
Site address
5440 PHILADELPHIA AVE.
City
CHINO
State
CA
ZIP
91710
Mailing
5440 PHILADELPHIA AVE., CHINO, CA 91710
Inspection type
Planned (H)
Scope
Complete (A)
Discipline
Safety
Advance notice
No
Union status
B
Opened
Closing conference
Case closed
Last modified
Data loaded
NAICS code
722210
Employees
6
Ownership type
A

6 citations on file for this inspection.

23400016 A

Other-than-serious Gravity 5 2 instances 6 exposed
Issued
Abate by
Penalty
Initial $195.00 · Current $110.00 Reduced
Recent events (3)
  • — O (O) $110
  • — C (O) $195
  • — Z (O) $195

3203(A)

Other-than-serious Gravity 10 1 instance 6 exposed
Issued
Abate by
Penalty
Initial $260.00 · Current $150.00 Reduced
Recent events (3)
  • — O (O) $150
  • — C (O) $260
  • — Z (O) $260

3273(A)

Other-than-serious Gravity 10 1 instance 6 exposed
Issued
Abate by
Penalty
Initial $260.00 · Current $150.00 Reduced
Recent events (3)
  • — O (O) $150
  • — C (O) $260
  • — Z (O) $260

3249(B)

Other-than-serious Gravity 5 1 instance 6 exposed
Issued
Abate by
Penalty
Initial $195.00 · Current $110.00 Reduced
Recent events (3)
  • — O (O) $110
  • — C (O) $195
  • — Z (O) $195

5194(E)(1)

Other-than-serious Gravity 10 1 instance 6 exposed
Issued
Abate by
Penalty
Initial $260.00 · Current $150.00 Reduced
Recent events (3)
  • — O (O) $150
  • — C (O) $260
  • — Z (O) $260

5162(A)

Serious Gravity 10 1 instance 2 exposed
Issued
Abate by
Penalty
Initial $8100.00 · Current $2700.00 Reduced
Recent events (3)
  • — O (S) $2700
  • — C (S) $8100
  • — Z (S) $8100

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 342199882.