CA
TWIN MOUNTAIN ROCK CO. is a notable inspection in the CA category. This page provides verified data from US Department of Labor — OSHA Enforcement Data (v4 API) (2026), helping you compare TWIN MOUNTAIN ROCK CO. against similar inspections and make data-driven decisions.
ANTELOPE VALLEY AGGREGATE, INC.
CA
STONE BROS., NEVADA MACHINERY
CA
FEDERAL WHITE AGGREGATES
CA
TUTOR-SALIBA-PERINI
CA
ATKINSON WASHINGTON ZACHRY
CA
| activity nr | 125,888,875 |
| reporting id | 0950652 |
| estab name | TWIN MOUNTAIN ROCK CO. |
| site address | CINDER CONE RD. & HWY 395 |
| site city | LITTLE LAKE |
| site state | CA |
| site zip | 93542 |
| owner type | A |
| owner type label | Private |
| sic code | 1429 |
| naics code | 000000 |
| insp type | H |
| insp type label | Planned |
| insp scope | A |
| insp scope label | Complete |
| safety hlth | S |
| safety hlth label | Safety |
| union status | N |
| union status label | N/A |
| nr in estab | 5 |
| open date | 1996-10-02 |
| close conf date | 1996-10-02 |
| close case date | 1996-10-16 |
| load dt | 2011-10-14 |
This OSHA inspection of TWIN MOUNTAIN ROCK CO. in CA opened on Oct 2, 1996 and closed 14 days later. The review was conducted as a programmed/planned review and focused on workplace safety conditions. Scope of the walk-around was complete. At the time of inspection, the establishment reported 5 employees on site.
The site of record for this inspection is listed below. Industry classification uses legacy SIC code 1429. Addresses reflect the establishment's location at the time of inspection.
In total, 8,796 OSHA inspections in CA appear in this dataset. During 1996 alone, 358 inspections were recorded in the state — this inspection at TWIN MOUNTAIN ROCK CO. is one of them. Enforcement volume varies year-over-year with OSHA staffing, federal priorities, and complaint inflow, so cross-year comparisons are most useful as a rough indicator of activity rather than a strict measure of risk.
This data helps you understand how TWIN MOUNTAIN ROCK CO. compares to others in the CA category. Use it to make informed decisions based on verified data from US Department of Labor — OSHA Enforcement Data (v4 API).
inspections with the closest data values to TWIN MOUNTAIN ROCK CO.
The OSHAPeek editorial team aggregates and verifies inspections data from US Department of Labor — OSHA Enforcement Data (v4 API). Every statistic on this site is cross-referenced against the official source before publication, with quarterly re-verification cycles.
Read our full methodology or contact us with corrections.
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