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Employers › CA

Mining, Quarrying, Oil & Gas · Irwindale, CA

United Rock Products CORP.

According to OSHA enforcement records (2010–2026), United Rock Products CORP. ranks #26,123 of 99,447 penalized U.S. employers by total current penalty, with a concerning safety record: 25 violations across 7 inspections.

Upper half by penalty4% serious
$13,890
OSHA penalties
25
Violations cited
7
OSHA inspections
#26,123
of 99,447 penalized employers

United Rock Products CORP. in Irwindale, CA has been the subject of 7 OSHA workplace inspections and 25 citations since 2010, according to enforcement records from the U.S. Department of Labor. Total penalties assessed: $13,890. All enforcement data below is sourced from the DOL public enforcement databases at data.dol.gov.

The record in one line

OSHA has inspected United Rock Products CORP. 7 times over 7 years, roughly annually. These inspections resulted in 25 violations, averaging 3.6 per inspection, above what's typical for a single visit. According to OSHA enforcement records, its total current penalty ranks #26,123 of 99,447 penalized U.S. employers (the upper half of penalized employers nationally). Of these, 1 were classified as serious - indicating hazards that could cause death or serious harm. Against the Mining, Quarrying, Oil & Gas industry average of 2 inspections per employer, this runs well above peers (3.1x the sector average) on inspection frequency. For comparison, Industrial Silica Products, LLC in Oroville, CA is another mining, quarrying, oil & gas employer with 6 OSHA inspections on record and $14,000 in current penalties.

3.6
violations per inspection
4.0%
of violations were serious
#26,123
of 99,447 penalized employers

Compliance score

F 38/100
  • F OSHA safety compliance: 25 violations across 7 OSHA inspections (3.6 per inspection), vs. national p10 0.0 (best) / p90 5.5 (worst) among 145,626 inspected employers.

Channels are separate federal datasets: a dimension marked not applicable simply has no record in that dataset for this employer, not a good or bad score.

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How United Rock Products CORP. compares on OSHA penalties

Total current penalty vs the Mining, Quarrying, Oil & Gas per-employer average

in penalties

What this shows United Rock Products CORP. runs well above peers (3.1x the sector average) in total OSHA penalties.

Source U.S. Department of Labor, OSHA enforcement extracts As of 2026

Where this penalty ranks nationally

Total current OSHA penalty vs every U.S. employer with a nonzero penalty

$13,890 Bottom 26% least affordable more affordable than 26% of 99,447 U.S. employers with a penalty

$0–$5,000: 43,959 U.S. employers with a penalty (44%). Below this entry. $5,000–$10,000: 20,304 U.S. employers with a penalty (20%). Below this entry. $10,000–$15,000: 11,027 U.S. employers with a penalty (11%). This entry sits in this band. $15,000–$20,000: 6,546 U.S. employers with a penalty (7%). Above this entry. $20,000–$25,000: 4,175 U.S. employers with a penalty (4%). Above this entry. $25,000–$30,000: 2,877 U.S. employers with a penalty (3%). Above this entry. $30,000–$35,000: 2,036 U.S. employers with a penalty (2%). Above this entry. $35,000–$40,000: 1,493 U.S. employers with a penalty (2%). Above this entry. $40,000–$45,000: 1,095 U.S. employers with a penalty (1%). Above this entry. $45,000–$50,000: 785 U.S. employers with a penalty (1%). Above this entry. $50,000–$55,000: 5,150 U.S. employers with a penalty (5%). Above this entry. This employer $0 $55,000 every penalized U.S. employer, bucketed by value

Each bar is a $5K-wide band; taller bars hold more U.S. employers with a penalty. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Department of Labor, OSHA enforcement extracts · 2026

Does more inspection scrutiny mean more findings?

Each dot is one of 21 Mining, Quarrying, Oil & Gas employers with an OSHA inspection on record, placed by inspections and violations cited. The highlighted dot is United Rock Products CORP..

Frequently inspected, many findingsRarely inspected, many findingsFrequently inspected, clean recordBelow median on both4.85.76.57.38.206.813.720.527.3OSHA inspectionsViolations citedHELMERICH & PAYNE IN…, OSHA inspections: 7 · Violations cited: 8SMITHBRIDGE GUAM, INC., OSHA inspections: 7 · Violations cited: 10BP EXPLORATION (ALAS…, OSHA inspections: 7 · Violations cited: 26PEAK OILFIELD SERVICES, OSHA inspections: 7 · Violations cited: 12NORAM DRILLING COMPANY, OSHA inspections: 7 · Violations cited: 10BIG OX ENERGY SIOUXL…, OSHA inspections: 7 · Violations cited: 19ENI PETROLEUM, OSHA inspections: 7 · Violations cited: 10DOYON UNIVERSAL SERV…, OSHA inspections: 6 · Violations cited: 4WATERFLEET, LLC, OSHA inspections: 6 · Violations cited: 2TREND SERVICES INC., OSHA inspections: 6 · Violations cited: 7CACTUS DRILLING COMP…, OSHA inspections: 8 · Violations cited: 8TOP BRAND, INC., OSHA inspections: 6 · Violations cited: 25Shell Oil Products U…, OSHA inspections: 8 · Violations cited: 10PACIFIC INTERNATIONA…, OSHA inspections: 6 · Violations cited: 0PIONEER NATURAL RESO…, OSHA inspections: 6 · Violations cited: 5TANMAR RENTALS, LLC, OSHA inspections: 6 · Violations cited: 10EUREKA RESOURCES LLC, OSHA inspections: 6 · Violations cited: 18DOYON DRILLING INC, OSHA inspections: 6 · Violations cited: 7STALLION OILFIELD SE…, OSHA inspections: 5 · Violations cited: 0ESS SUPPORT SERVICES, OSHA inspections: 5 · Violations cited: 5United Rock Products…, OSHA inspections: 7 · Violations cited: 25
United Rock Products CORP. has 7 OSHA inspections on record and 25 violations cited. The crosshair marks the median among these Mining, Quarrying, Oil & Gas peers. Across this sector's tracked employers, more inspections is moderately associated with more violations found -- not a coincidence, but not a guarantee either.

United Rock Products CORP. in the Mining, Quarrying, Oil & Gas enforcement ledger

In Mining, Quarrying, Oil & Gas, United Rock Products CORP. sits at penalty rank #219 of 1,117 penalized establishments ($13,890 assessed).

How United Rock Products CORP. Compares

United Rock Products CORP.'s 3.57 violations per inspection compares to the Mining, Quarrying, Oil & Gas sector average of 3.1 violations per employer.

Against the Mining, Quarrying, Oil & Gas industry average of $4,539 per employer, this employer's current OSHA penalty runs well above peers (3.1x the sector average).

Enforcement detail

OSHA Inspection History

Total Inspections

7

First Inspection

2015-02-05

Last Inspection

2022-08-01

Inspection Span

7 yrs

Violations / Inspection

3.6

Avg Penalty / Inspection

$1,984

Industry Avg / Inspection

$2,042

What this shows 7 inspections over 7 years, averaging 3.6 violations per visit. That's $1,984 per inspection vs. the Mining, Quarrying, Oil & Gas average of $2,042.

Enforcement detail

Violation Breakdown

1

Serious

4.0% of total

0

Willful

0.0% of total

0

Repeat

0.0% of total

24

Other-Than-Serious

96.0% of total

What this shows Serious violations involve hazards that could cause death or serious physical harm. Willful violations indicate intentional or knowing disregard of the law. Repeat violations are for hazards previously cited within the past 5 years.

Enforcement detail

Penalty Analysis

Initial Penalty Assessed

$16,475

Current Penalty Amount

$13,890

Penalty Reduction

15.7%

What this shows Penalties were reduced by $2,585 from the initial assessment of $16,475. Reductions may result from informal settlements, formal contests, or negotiated agreements with OSHA.

Industry Safety Context: Mining, Quarrying, Oil & Gas

How United Rock Products CORP. compares to the Mining, Quarrying, Oil & Gas sector, which has 2,294 employers tracked by PlainWorker.

Metric United Rock Products CORP. Industry Avg
Inspections 7 2.2
Violations 25 3.1
Total Penalty $13,890 $4,539
Avg Penalty per Inspection $1,984 $2,042
View all 2,294 employers in Mining, Quarrying, Oil & Gas →

Nationwide Mining, Quarrying, Oil & Gas peers with similar penalties or inspection counts

Two OSHA-record peer sets for United Rock Products CORP., both outside CA so the neighborhoods are not geographic containment.

Similar current OSHA penalty

Nearest same-sector employers by current assessed penalty ($13,890 here).

Murfin Drilling CO. INC. $13,798 KS Halliburton Energy Services, INC. $14,000 CO Xtreme Drilling and Coil Services $14,000 CO Weatherford US, LP $14,000 MI

Similar OSHA inspection count

Same-sector employers with a comparable inspection history outside this state (7 inspections here).

Helmerich & Payne International Drilling CO. 7 insp. Pecos, TX Smithbridge Guam, INC. 7 insp. Tamuning, GU BP Exploration (Alaska) INC 7 insp. Prudhoe Bay, AK Peak Oilfield Services 7 insp. Pecos, TX

Nearby & Similar Employers in Mining, Quarrying, Oil & Gas

Showing 5 of 2293 other employers tracked in this sector.

Momentum Pipeline
Millstone, WV
0 inspections $0
Murfin Drilling CO. INC.
Scott City, KS
2 inspections $13,798
Premier Tank Truck Service
Houston, TX
0 inspections $0
Halliburton Energy Services, INC.
Hudson, CO
2 inspections $14,000
Industrial Silica Products, LLC
Oroville, CA
6 inspections $14,000

Compare United Rock Products CORP. vs Momentum Pipeline side-by-side →

What to do with this record

Use United Rock Products CORP.'s enforcement history as one data point, not the whole picture.

  • A single employer's record can look unusual in isolation. Compare United Rock Products CORP. against Momentum Pipeline, a similarly-sized employer in the same sector, before drawing conclusions. Compare side-by-side
  • See whether United Rock Products CORP.'s inspection and penalty record is typical for Mining, Quarrying, Oil & Gas or an outlier against the sector's own average. View the Mining, Quarrying, Oil & Gas sector
  • Before you accept a job or raise a safety concern, search any employer for its own OSHA inspection history the same way you found this one. Search employers

Figures reflect closed OSHA and WHD federal enforcement actions on record (2010–2026); not every workplace issue results in an inspection or investigation.

Frequently Asked Questions

Is United Rock Products CORP. safe to work at? ▼
Based on OSHA records, United Rock Products CORP.'s workplace safety record is concerning, with multiple serious compliance issues. The employer has 25 violations across 7 inspections, including 1 serious violations. Compared to Mining, Quarrying, Oil & Gas industry peers, this is above average for penalties. Review the full inspection history below for details.
How many OSHA violations does United Rock Products CORP. have? ▼
United Rock Products CORP. has 25 OSHA violations on record, including 1 serious, 0 willful, and 0 repeat violations. The total current penalty amount is $13,890.
How many OSHA inspections has United Rock Products CORP. had? ▼
United Rock Products CORP. has had 7 OSHA inspections, with the first recorded on 2015-02-05 and the most recent on 2022-08-01. This averages 3.6 violations per inspection.
What is the total penalty amount for United Rock Products CORP.? ▼
United Rock Products CORP. has been assessed $13,890 in current OSHA penalties, reduced from an initial assessment of $16,475 (a 15.7% reduction).
Does United Rock Products CORP. have any serious or willful violations? ▼
Yes. United Rock Products CORP. has 1 serious violations. Serious violations involve hazards likely to cause death or serious physical harm. Willful violations indicate the employer intentionally or knowingly disregarded the law.
What industry does United Rock Products CORP. operate in? ▼
United Rock Products CORP. operates in the Mining, Quarrying, Oil & Gas sector (NAICS code 212321). This industry has 2,294 employers tracked by PlainWorker, with 5,098 total OSHA inspections and $10.41M in cumulative penalties.
Where does United Rock Products CORP. rank nationally on OSHA penalties? ▼
Among the 99,447 U.S. employers with a nonzero current OSHA penalty in PlainWorker's corpus, United Rock Products CORP. ranks #26,123 (the upper half of penalized employers nationally). The ordinal is a live COUNT of employers with a lower total_current_penalty; see the methodology page for the exact derivation.
How does United Rock Products CORP.'s safety record compare to industry average? ▼
United Rock Products CORP.'s total OSHA penalty of $13,890 is above the Mining, Quarrying, Oil & Gas industry average of $4,539 per employer (3.1x the average). The employer has 7 inspections compared to the industry average of 2.2 per employer. For a direct comparison, Industrial Silica Products, LLC in Oroville, CA is a similar mining, quarrying, oil & gas employer with $14,000 in current penalties.
Data Sources & Methodology ▼

Data as of 2026. Source: U.S. Department of Labor (OSHA, WHD).

Source: OSHA Enforcement Data

Inspection and violation records from the Occupational Safety and Health Administration (OSHA), U.S. Department of Labor, covering the period 2010–2026. Includes inspection dates, violation types (serious, willful, repeat, other-than-serious), and penalty amounts. Penalties shown are current assessed amounts and may differ from original citations due to settlement, contest, or reduction.

Source: Wage and Hour Division (WHD)

Compliance actions from the WHD, covering enforcement of the Fair Labor Standards Act (FLSA), including minimum wage, overtime, and child labor violations. Back wages represent amounts owed to affected employees as determined by WHD investigations.

Employer Matching

Employers are matched across OSHA and WHD datasets by name, state, and city. Employers included in PlainWorker have 2 or more OSHA inspections or $1,000+ in WHD back wages. Data is updated monthly from data.dol.gov.

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Every figure on PlainWorker is rendered directly from official U.S. Department of Labor OSHA and Wage & Hour Division enforcement records, no number is typed in by an editor. This employer's ratios (penalty-per-violation, industry comparisons) are computed live from the 7 inspections on record. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026.