Summary
SIERRA ROCK INC has accumulated 2 OSHA violations across 1 inspection over 33 years of recorded history.
The establishment sits in the 54th percentile for violations within its industry-state peer group of 119,384 employers. The most recent enforcement activity was recorded 33 years ago.
Federal records were found in 2 of 15 sources. Sources without matching records returned empty for this establishment.
Agency coverage
SIERRA ROCK INC appears in OSHA workplace safety and MSHA mine safety records only. No matching records were found in WHD wage enforcement, EPA environmental compliance, NLRB labor relations, OFLC visa and labor certification (historical), FMCSA motor carrier registration, SAM.gov federal debarment, CMS nursing home enforcement, UVA Corporate Prosecution Registry, CPSC product recalls, or NHTSA vehicle recalls.
OSHA workplace safety
100% of inspections at this establishment produced violations,
Most-cited OSHA standards
Top OSHA standards cited at this employer, ranked by citation count. Standards (CFR sections) cluster citations into safety themes -- machine guarding, lockout-tagout, hazard communication, fall protection, process safety, etc. A concentration on one or two sections reveals a pattern that individual citations don’t. 2 distinct standards shown · 2 citations in this view.
| CFR section | Citations | Inspections | Total penalty | First cited | Last cited |
|---|---|---|---|---|---|
| 3944 B | 1 | 1 | — | Sep 1992 | Sep 1992 |
| 461 C | 1 | 1 | — | Sep 1992 | Sep 1992 |
Source: OSHA inspection citations (violation_detail). CFR section codes can be looked up at osha.gov/laws-regs for the formal standard text. Per-inspection detail and the specific violation descriptions are available by expanding individual inspections below.
Peer comparison
Above average violations. Peer group: 119,384 employers. This establishment has 2 OSHA violations; peer median is 1.
Safety self-report (OSHA 300A)
No self-reported injury rates filed with OSHA's Injury Tracking Application for SIERRA ROCK INC. Verify directly with OSHA Injury Tracking Application →
Inspection breakdown
Complaint- and accident-triggered inspections are stronger risk signals than routine planned inspections.
OSHA severe injury reports
No severe injury reports (hospitalization, amputation, or loss of an eye) on file under 29 CFR 1904.39 for SIERRA ROCK INC. Verify directly with Occupational Safety and Health Administration →
Activity timeline
No federal enforcement activity has been recorded against this establishment in 33+ years. Most recent activity: 33 years ago. Data on this page is refreshed weekly.
Wage & Hour Division (WHD)
No WHD wage, overtime, or child-labor enforcement cases on file for SIERRA ROCK INC. Verify directly with Wage and Hour Division →
Mine safety (MSHA)
Company-level in CA — for SIERRA ROCK INC, not this location alone
Mine Safety & Health Administration — citations issued at mining operations. MSHA records cases at the company/regional level (no worksite address), so these are matched by company name and state and may span other SIERRA ROCK INC operations in the same state.
MSHA citations
Mine Safety and Health Administration citations. S&S (significant and substantial) marks violations that could reasonably contribute to a serious injury. Negligence rating is MSHA’s operator-culpability assessment (none, low, moderate, high, or reckless disregard). Proposed = assessed at issuance; Paid = post-settlement / appeal. 100 citations · 68S&S · $86,974 proposed / $34,516 paid.
| Citation | Mine | Date | Section | S&S | Negligence | Proposed | Paid |
|---|---|---|---|---|---|---|---|
| 8696111 | Diamond Quarry El Dorado, CA | Aug 2012 | — | Yes | HighNegligence | $13,300 | — |
| 8603539 | Diamond Quarry El Dorado, CA | Jul 2011 | — | Yes | ModNegligence | $6,996 | — |
| 8603537 | Diamond Quarry El Dorado, CA | Jul 2011 | — | Yes | HighNegligence | $5,080 | — |
| 8879921 | Diamond Quarry El Dorado, CA | Nov 2017 | — | Yes | HighNegligence | $3,939 | $3,939 |
| 8603536 | Diamond Quarry El Dorado, CA | Jul 2011 | — | Yes | LowNegligence | $3,143 | — |
| 8991443 | Diamond Quarry El Dorado, CA | Jan 2017 | — | Yes | ModNegligence | $2,438 | $2,438 |
| 8695760 | Diamond Quarry El Dorado, CA | Jun 2012 | — | Yes | HighNegligence | $1,995 | — |
| 8612693 | Diamond Quarry El Dorado, CA | Aug 2013 | — | Yes | ModNegligence | $1,944 | — |
| 8603530 | Diamond Quarry El Dorado, CA | Jul 2011 | — | Yes | ModNegligence | $1,944 | — |
| 8603524 | Diamond Quarry El Dorado, CA | Jul 2011 | — | Yes | ModNegligence | $1,944 | — |
| 7972541 | Diamond Quarry El Dorado, CA | Jan 2000 | — | Yes | ModNegligence | $1,603 | — |
| 6353540 | Weber Creek Quarry El Dorado, CA | Aug 2005 | — | Yes | HighNegligence | $1,566 | $1,566 |
| 8879915 | Diamond Quarry El Dorado, CA | Nov 2017 | — | Yes | ModNegligence | $1,539 | $1,539 |
| 8603548 | Diamond Quarry El Dorado, CA | Jul 2011 | — | Yes | ModNegligence | $1,530 | — |
| 8603544 | Diamond Quarry El Dorado, CA | Jul 2011 | — | No | ModNegligence | $1,530 | — |
| 8603534 | Diamond Quarry El Dorado, CA | Jul 2011 | — | Yes | ModNegligence | $1,530 | — |
| 8879916 | Diamond Quarry El Dorado, CA | Nov 2017 | — | Yes | ModNegligence | $1,508 | $1,508 |
| 8879923 | Diamond Quarry El Dorado, CA | Nov 2017 | — | Yes | ModNegligence | $1,211 | $1,211 |
| 8879925 | Diamond Quarry El Dorado, CA | Nov 2017 | — | Yes | ModNegligence | $1,187 | $1,187 |
| 8879924 | Diamond Quarry El Dorado, CA | Nov 2017 | — | Yes | ModNegligence | $1,187 | $1,187 |
| 9377171 | Diamond Quarry El Dorado, CA | Jun 2018 | — | Yes | ModNegligence | $1,118 | $1,118 |
| 9377003 | Diamond Quarry El Dorado, CA | Aug 2017 | — | Yes | ModNegligence | $1,096 | $1,096 |
| 8879933 | Diamond Quarry El Dorado, CA | Nov 2017 | — | Yes | ModNegligence | $1,010 | $1,010 |
| 8696109 | Diamond Quarry El Dorado, CA | Aug 2012 | 104(b) | No | HighNegligence | $1,000 | — |
| 8696108 | Diamond Quarry El Dorado, CA | Aug 2012 | 104(b) | No | HighNegligence | $1,000 | — |
| 8879625 | Diamond Quarry El Dorado, CA | Jul 2016 | — | Yes | ModNegligence | $994 | $994 |
| 8879623 | Diamond Quarry El Dorado, CA | Jul 2016 | — | Yes | ModNegligence | $994 | $994 |
| 8785610 | Diamond Quarry El Dorado, CA | Feb 2014 | — | No | ModNegligence | $807 | — |
| 8695757 | Diamond Quarry El Dorado, CA | Jun 2012 | — | Yes | HighNegligence | $807 | — |
| 8991528 | Diamond Quarry El Dorado, CA | Aug 2017 | — | Yes | ModNegligence | $734 | $734 |
| 8603543 | Diamond Quarry El Dorado, CA | Jul 2011 | — | No | LowNegligence | $634 | — |
| 8603540 | Diamond Quarry El Dorado, CA | Jul 2011 | — | No | LowNegligence | $634 | — |
| 8603538 | Diamond Quarry El Dorado, CA | Jul 2011 | — | No | ModNegligence | $634 | — |
| 8603535 | Diamond Quarry El Dorado, CA | Jul 2011 | — | No | ModNegligence | $634 | — |
| 8603532 | Diamond Quarry El Dorado, CA | Jul 2011 | — | No | ModNegligence | $540 | — |
| 8603531 | Diamond Quarry El Dorado, CA | Jul 2011 | — | No | ModNegligence | $540 | — |
| 8879926 | Diamond Quarry El Dorado, CA | Nov 2017 | — | Yes | ModNegligence | $533 | $533 |
| 7972554 | Diamond Quarry El Dorado, CA | Feb 2000 | — | Yes | HighNegligence | $475 | $475 |
| 8879918 | Diamond Quarry El Dorado, CA | Nov 2017 | — | Yes | ModNegligence | $453 | $453 |
| 8879631 | Diamond Quarry El Dorado, CA | Jul 2016 | — | No | ModNegligence | $446 | $446 |
| 8603541 | Diamond Quarry El Dorado, CA | Jul 2011 | — | No | ModNegligence | $425 | — |
| 8561077 | Diamond Quarry El Dorado, CA | Jun 2010 | — | Yes | HighNegligence | $425 | $425 |
| 8561076 | Diamond Quarry El Dorado, CA | Jun 2010 | — | Yes | HighNegligence | $425 | $425 |
| 7972535 | Diamond Quarry El Dorado, CA | Jan 2000 | — | Yes | ModNegligence | $399 | $399 |
| 9507203 | Diamond Quarry El Dorado, CA | Apr 2021 | — | Yes | ModNegligence | $355 | $355 |
| 9502947 | Diamond Quarry El Dorado, CA | Nov 2020 | — | Yes | ModNegligence | $351 | $351 |
| 9502946 | Diamond Quarry El Dorado, CA | Nov 2020 | — | Yes | ModNegligence | $351 | $351 |
| 7972556 | Diamond Quarry El Dorado, CA | Feb 2000 | — | Yes | HighNegligence | $340 | — |
| 7972555 | Diamond Quarry El Dorado, CA | Feb 2000 | — | Yes | HighNegligence | $340 | $171 |
| 8879929 | Diamond Quarry El Dorado, CA | Nov 2017 | — | Yes | ModNegligence | $305 | $305 |
| 8879917 | Diamond Quarry El Dorado, CA | Nov 2017 | — | No | ModNegligence | $305 | $305 |
| 7972542 | Diamond Quarry El Dorado, CA | Jan 2000 | — | Yes | ModNegligence | $294 | $294 |
| 6353551 | Diamond Quarry El Dorado, CA | Aug 2005 | — | Yes | ModNegligence | $286 | $286 |
| 8561088 | Diamond Quarry El Dorado, CA | Jun 2010 | — | Yes | ModNegligence | $285 | $285 |
| 8561087 | Diamond Quarry El Dorado, CA | Jun 2010 | — | Yes | ModNegligence | $285 | $285 |
| 8561086 | Diamond Quarry El Dorado, CA | Jun 2010 | — | Yes | ModNegligence | $285 | $285 |
| 8561078 | Diamond Quarry El Dorado, CA | Jun 2010 | — | Yes | ModNegligence | $285 | $285 |
| 8561073 | Diamond Quarry El Dorado, CA | Jun 2010 | — | Yes | ModNegligence | $285 | $285 |
| 8695761 | Diamond Quarry El Dorado, CA | Jun 2012 | — | Yes | ModNegligence | $270 | — |
| 8695744 | Diamond Quarry El Dorado, CA | Jun 2012 | — | Yes | ModNegligence | $270 | — |
| 8879455 | Diamond Quarry El Dorado, CA | Sep 2015 | — | Yes | ModNegligence | $243 | — |
| 8695755 | Diamond Quarry El Dorado, CA | Jun 2012 | — | Yes | ModNegligence | $243 | — |
| 8695754 | Diamond Quarry El Dorado, CA | Jun 2012 | — | Yes | HighNegligence | $243 | — |
| 8695747 | Diamond Quarry El Dorado, CA | Jun 2012 | — | Yes | ModNegligence | $243 | — |
| 8603545 | Diamond Quarry El Dorado, CA | Jul 2011 | — | No | ModNegligence | $243 | — |
| 7972552 | Diamond Quarry El Dorado, CA | Feb 2000 | — | Yes | ModNegligence | $242 | $242 |
| 7972540 | Diamond Quarry El Dorado, CA | Jan 2000 | — | Yes | ModNegligence | $242 | $242 |
| 8879920 | Diamond Quarry El Dorado, CA | Nov 2017 | — | No | ModNegligence | $239 | $239 |
| 9377177 | Diamond Quarry El Dorado, CA | Jun 2018 | — | No | ModNegligence | $225 | $225 |
| 9377176 | Diamond Quarry El Dorado, CA | Jun 2018 | — | No | ModNegligence | $225 | $225 |
| 9377175 | Diamond Quarry El Dorado, CA | Jun 2018 | — | No | ModNegligence | $225 | $225 |
| 7996521 | Diamond Quarry El Dorado, CA | Apr 2002 | — | Yes | ModNegligence | $224 | $224 |
| 7996083 | Diamond Quarry El Dorado, CA | Mar 2001 | — | Yes | ModNegligence | $224 | $224 |
| 9377002 | Diamond Quarry El Dorado, CA | Aug 2017 | — | No | ModNegligence | $220 | $220 |
| 8991531 | Diamond Quarry El Dorado, CA | Aug 2017 | — | No | ModNegligence | $220 | $220 |
| 8991530 | Diamond Quarry El Dorado, CA | Aug 2017 | — | No | LowNegligence | $220 | $220 |
| 8991529 | Diamond Quarry El Dorado, CA | Aug 2017 | — | No | ModNegligence | $220 | $220 |
| 8991527 | Diamond Quarry El Dorado, CA | Aug 2017 | — | No | ModNegligence | $220 | $220 |
| 8991526 | Diamond Quarry El Dorado, CA | Aug 2017 | — | No | ModNegligence | $220 | $220 |
| 6353543 | Weber Creek Quarry El Dorado, CA | Aug 2005 | — | Yes | ModNegligence | $217 | $217 |
| 6353542 | Weber Creek Quarry El Dorado, CA | Aug 2005 | — | Yes | ModNegligence | $217 | $217 |
| 6370689 | Diamond Quarry El Dorado, CA | Jan 2005 | — | Yes | ModNegligence | $217 | $217 |
| 7992434 | Weber Creek Quarry El Dorado, CA | Sep 2000 | — | No | HighNegligence | $207 | $207 |
| 8879930 | Diamond Quarry El Dorado, CA | Nov 2017 | — | No | ModNegligence | $204 | $204 |
| 8879928 | Diamond Quarry El Dorado, CA | Nov 2017 | — | No | ModNegligence | $204 | $204 |
| 7972539 | Diamond Quarry El Dorado, CA | Jan 2000 | — | Yes | ModNegligence | $196 | $196 |
| 7972538 | Diamond Quarry El Dorado, CA | Jan 2000 | — | Yes | ModNegligence | $196 | $196 |
| 7972550 | Diamond Quarry El Dorado, CA | Feb 2000 | — | Yes | ModNegligence | $184 | $184 |
| 6353550 | Diamond Quarry El Dorado, CA | Aug 2005 | — | Yes | ModNegligence | $177 | $177 |
| 6370687 | Diamond Quarry El Dorado, CA | Jan 2005 | — | Yes | ModNegligence | $177 | $177 |
| 6370686 | Diamond Quarry El Dorado, CA | Jan 2005 | — | Yes | ModNegligence | $177 | $177 |
| 6370684 | Diamond Quarry El Dorado, CA | Jan 2005 | — | Yes | ModNegligence | $177 | $177 |
| 6356866 | Diamond Quarry El Dorado, CA | Dec 2003 | — | Yes | ModNegligence | $177 | $177 |
| 6345613 | Diamond Quarry El Dorado, CA | Jan 2003 | — | Yes | ModNegligence | $173 | $173 |
| 8912426 | Diamond Quarry El Dorado, CA | Apr 2024 | — | Yes | ModNegligence | $172 | $172 |
| 8879659 | Diamond Quarry El Dorado, CA | Oct 2018 | 110(j) | No | HighNegligence | $154 | $154 |
| 9680942 | Diamond Quarry El Dorado, CA | Oct 2025 | — | No | LowNegligence | $151 | $151 |
| 9890712 | Diamond Quarry El Dorado, CA | Apr 2025 | — | No | LowNegligence | $151 | $151 |
| 9890711 | Diamond Quarry El Dorado, CA | Apr 2025 | — | No | LowNegligence | $151 | $151 |
| 9377174 | Diamond Quarry El Dorado, CA | Jun 2018 | — | No | ModNegligence | $151 | $151 |
Source: MSHA citation database. “Contractor” annotations indicate the cited party was on-site at the mine but not the mine’s operator -- responsibility attaches to the contractor LLC, not the mine’s owner. Section codes reference 30 CFR (the Mine Safety and Health regulations).
Labor relations (NLRB)
No NLRB unfair labor practice charges or union representation cases on file for SIERRA ROCK INC. Verify directly with National Labor Relations Board →
Visa & labor certification (OFLC) — historical
No H-1B, H-2A, or H-2B labor condition applications on file (historical data only — DOL ended OFLC publication) for SIERRA ROCK INC. Verify directly with Office of Foreign Labor Certification →
Environmental compliance (EPA)
No EPA inspections or formal enforcement actions on file for SIERRA ROCK INC. Verify directly with Environmental Protection Agency →
Federal criminal prosecution record
No federal criminal prosecutions, plea agreements, or deferred-prosecution agreements on file for SIERRA ROCK INC. Verify directly with UVA Corporate Prosecution Registry →
Inspection history
| Date | Trigger | Violations | Serious | Penalty | |
|---|---|---|---|---|---|
| 1992-08-27 | Planned | 2 | — | $0 |
Source: OSHA IMIS. Citation amounts reflect initially assessed penalties; final amounts after appeal may differ.
In the news
Related searches
- Employers in CAState-wide enforcement data
About this data
This profile aggregates federal enforcement records on SIERRA ROCK INC from every major federal compliance and enforcement source plus the UVA Corporate Prosecution Registry. OSHA workplace safety inspections, WHD wage cases, MSHA mine safety, EPA environmental enforcement, NLRB labor relations, OFLC visa/labor certification, FMCSA motor carrier registration, SAM.gov debarments, CMS nursing-home records, BLS industry safety benchmarks, OSHA ITA self-reported injury rates, SEC enforcement and financial disclosures, CPSC and NHTSA recalls.
Establishments are matched across agencies using normalized employer name, state, and ZIP code.
OSHA citations typically appear 3–8 months after the inspection, so very recent enforcement actions may not yet be reflected. Profiles may be incomplete if the establishment operates under multiple legal names or files under variations our entity-matching rules don’t yet cover. To report a missing record or correction, email corrections@fastdol.com.
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Contact sales →Frequently asked
- What is SIERRA ROCK INC's OSHA violation history?
- SIERRA ROCK INC has 1 OSHA inspection on record with 2 violations and $0 in total penalties.