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

OSHA Inspection: DIAMOND CONTRACTING CORP

Complaint inspection · Safety discipline

On , OSHA opened a complaint safety inspection of DIAMOND CONTRACTING CORP in YORK ST AND SIGNAL CREEK BLVD, THORNTON, CO 80241 (NAICS 237110). OSHA activity number 330983081.

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employer broke any rule; any findings appear as the citations listed below, and citations can be contested, reduced, or withdrawn.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
YORK ST AND SIGNAL CREEK BLVD
City
THORNTON
State
CO
ZIP
80241
Mailing
18300 W. HIGHWAY 72, ARVADA, CO 80007
Inspection type
Complaint (B)
Scope
Partial (B)
Discipline
Safety
Advance notice
No
Union status
B
Opened
Closing conference
Case closed
Last modified
Data loaded
NAICS code
237110
Employees
4
Ownership type
A

1 citation on file for this inspection.

1926.202

Other-than-serious 1 instance 5 exposed
Issued
Sep 16, 2011
Abate by
Sep 30, 2011
Penalty
Initial $2,550 · Current $1,275 Reduced
29 CFR 1926.202:  Barricades for protection of employees did not conform to the Manual on Uniform Traffic Control Devices (MUTCD) (1988 Edition Revision 3 or the Millennium Edition):  a)  Diamond Contracting Corp at York Street and Signal Creek Blvd., Thornton, CO 80241:  On or before August 26, 2011, the creating, correcting, and exposing employer did not ensure the barricades conformed to the MUTCD in the following instances: 1) Employees of the asphalt subcontractor were laying asphalt at the south end of the work zone without a taper; 2) About 10 cones were damaged, brown, or marked up, with a loss of visibility.  Condition exposed employees to struck-by hazards.  Abatement note:  Abatement certification is required for this item (see enclosed, "Certification of Corrective Action Worksheet"). Abatement note: The MUTCD Millennium Edition, December 2000, Part VI, Section 6C.08 discusses requirements associated with temporary traffic control zones, including the use of tapers with channelizing devices to move traffic out of or into normal paths.  Section 6F.58 and 6F.59 describe the use of cones and other barricades to serve as channelizing devices.  6F.58 provides that devices that are damaged or have lost a significant amount of retroreflectivity and effectiveness shall be replaced.
Recent events (2)
  • — I (O) $1275
  • — Z (S) $2550

View Diamond Contracting Corp'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 330983081.

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