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Employers › CA

Mining, Quarrying, Oil & Gas · Hughson, CA

Calaveras Materials, INC.

According to OSHA enforcement records (2010–2026), Calaveras Materials, INC. ranks #40,700 of 99,447 penalized U.S. employers by total current penalty, with a concerning safety record: 13 violations across 3 inspections.

Upper half by penalty8% serious
$8,220
OSHA penalties
13
Violations cited
3
OSHA inspections
#40,700
of 99,447 penalized employers

Calaveras Materials, INC. in Hughson, CA has been the subject of 3 OSHA workplace inspections and 13 citations since 2010, according to enforcement records from the U.S. Department of Labor. Total penalties assessed: $8,220. All enforcement data below is sourced from the DOL public enforcement databases at data.dol.gov.

The record in one line

OSHA has inspected Calaveras Materials, INC. 3 times over 3 years, roughly annually. These inspections resulted in 13 violations, averaging 4.3 per inspection, above what's typical for a single visit. According to OSHA enforcement records, its total current penalty ranks #40,700 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 moderately above peers (1.3x the sector average) on inspection frequency. For comparison, Mpis Environmental, LLC in Houston, TX is another mining, quarrying, oil & gas employer with 2 OSHA inspections on record and $8,315 in current penalties.

4.3
violations per inspection
7.7%
of violations were serious
#40,700
of 99,447 penalized employers

Compliance score

F 27/100
  • F OSHA safety compliance: 13 violations across 3 OSHA inspections (4.3 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 Calaveras Materials, INC. compares on OSHA penalties

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

in penalties

What this shows Calaveras Materials, INC. runs moderately above peers (1.8x 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

$8,220 Bottom 41% least affordable more affordable than 41% 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%). This entry sits in this band. $10,000–$15,000: 11,027 U.S. employers with a penalty (11%). Above this entry. $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 Calaveras Materials, INC..

Frequently inspected, many findingsRarely inspected, many findingsFrequently inspected, clean recordBelow median on both3.03.033.03.006.312.618.925.2OSHA inspectionsViolations citedCACTUS DRILLING COMP…, OSHA inspections: 3 · Violations cited: 5SCANDRILL INC, OSHA inspections: 3 · Violations cited: 2CALLON PETROLEUM OPE…, OSHA inspections: 3 · Violations cited: 0UNITED DRILLING INC., OSHA inspections: 3 · Violations cited: 14COTERRA ENERGY, INC., OSHA inspections: 3 · Violations cited: 0METRO MATERIALS, INC., OSHA inspections: 3 · Violations cited: 9CONOCO PHILLIPS, OSHA inspections: 3 · Violations cited: 0PERMIAN RESOURCES, OSHA inspections: 3 · Violations cited: 0EXTRACTION OIL & GAS, OSHA inspections: 3 · Violations cited: 0TOTEM WELL SERVICE, OSHA inspections: 3 · Violations cited: 19AREPET INDUSTRIES, LLC, OSHA inspections: 3 · Violations cited: 7HAWAIIAN CEMENT, OSHA inspections: 3 · Violations cited: 2HA INTERNATIONAL LLC, OSHA inspections: 3 · Violations cited: 9HEROD INDUSTRIES INC., OSHA inspections: 3 · Violations cited: 6HALLIBURTON ENERGY S…, OSHA inspections: 3 · Violations cited: 5EDI QUINN ALS, LLC, OSHA inspections: 3 · Violations cited: 3TEXSAND ENERGY RESOU…, OSHA inspections: 3 · Violations cited: 24OIL PATCH GROUP, INC., OSHA inspections: 3 · Violations cited: 7MPLX LP, OSHA inspections: 3 · Violations cited: 0RJ ENERGY, LLC, OSHA inspections: 3 · Violations cited: 0Calaveras Materials,…, OSHA inspections: 3 · Violations cited: 13
Calaveras Materials, INC. has 3 OSHA inspections on record and 13 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.

Calaveras Materials, INC. in the Mining, Quarrying, Oil & Gas enforcement ledger

In Mining, Quarrying, Oil & Gas, Calaveras Materials, INC. sits at penalty rank #325 of 1,117 penalized establishments ($8,220 assessed).

How Calaveras Materials, INC. Compares

Calaveras Materials, INC.'s 4.33 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 moderately above peers (1.8x the sector average).

Enforcement detail

OSHA Inspection History

Total Inspections

3

First Inspection

2014-12-16

Last Inspection

2018-03-27

Inspection Span

3 yrs

Violations / Inspection

4.3

Avg Penalty / Inspection

$2,740

Industry Avg / Inspection

$2,042

What this shows 3 inspections over 3 years, averaging 4.3 violations per visit. That's $2,740 per inspection vs. the Mining, Quarrying, Oil & Gas average of $2,042.

Enforcement detail

Violation Breakdown

1

Serious

7.7% of total

0

Willful

0.0% of total

0

Repeat

0.0% of total

12

Other-Than-Serious

92.3% 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

$35,365

Current Penalty Amount

$8,220

Penalty Reduction

76.8%

What this shows Penalties were reduced by $27,145 from the initial assessment of $35,365. Reductions may result from informal settlements, formal contests, or negotiated agreements with OSHA.

Industry Safety Context: Mining, Quarrying, Oil & Gas

How Calaveras Materials, INC. compares to the Mining, Quarrying, Oil & Gas sector, which has 2,294 employers tracked by PlainWorker.

Metric Calaveras Materials, INC. Industry Avg
Inspections 3 2.2
Violations 13 3.1
Total Penalty $8,220 $4,539
Avg Penalty per Inspection $2,740 $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 Calaveras Materials, INC., both outside CA so the neighborhoods are not geographic containment.

Similar current OSHA penalty

Nearest same-sector employers by current assessed penalty ($8,220 here).

Ensign United States Drilling, INC. $8,200 CO Mpis Environmental, LLC $8,315 TX JRH Contracting INC $8,125 UT Oil States Industries - Tulsa Division $8,332 OK

Similar OSHA inspection count

Same-sector employers with a comparable inspection history outside this state (3 inspections here).

Cactus Drilling Company, LLC 3 insp. Mentone, TX Scandrill INC 3 insp. Wink, TX Callon Petroleum Operating Company 3 insp. Pecos, TX United Drilling INC. 3 insp. Fort Stockton, TX

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

Showing 5 of 2293 other employers tracked in this sector.

Ensign United States Drilling, INC.
Greeley, CO
4 inspections $8,200
Portola Minerals Company
Columbia, CA
7 inspections $8,245
Apache Stone
Salado, TX
0 inspections $0
Musket Corporation
Windsor, CO
0 inspections $0
Mpis Environmental, LLC
Houston, TX
2 inspections $8,315

Compare Calaveras Materials, INC. vs Ensign United States Drilling, INC. side-by-side →

What to do with this record

Use Calaveras Materials, INC.'s enforcement history as one data point, not the whole picture.

  • A single employer's record can look unusual in isolation. Compare Calaveras Materials, INC. against Ensign United States Drilling, INC., a similarly-sized employer in the same sector, before drawing conclusions. Compare side-by-side
  • See whether Calaveras Materials, INC.'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 Calaveras Materials, INC. safe to work at? ▼
Based on OSHA records, Calaveras Materials, INC.'s workplace safety record is concerning, with multiple serious compliance issues. The employer has 13 violations across 3 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 Calaveras Materials, INC. have? ▼
Calaveras Materials, INC. has 13 OSHA violations on record, including 1 serious, 0 willful, and 0 repeat violations. The total current penalty amount is $8,220.
How many OSHA inspections has Calaveras Materials, INC. had? ▼
Calaveras Materials, INC. has had 3 OSHA inspections, with the first recorded on 2014-12-16 and the most recent on 2018-03-27. This averages 4.3 violations per inspection.
What is the total penalty amount for Calaveras Materials, INC.? ▼
Calaveras Materials, INC. has been assessed $8,220 in current OSHA penalties, reduced from an initial assessment of $35,365 (a 76.8% reduction).
Does Calaveras Materials, INC. have any serious or willful violations? ▼
Yes. Calaveras Materials, INC. 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 Calaveras Materials, INC. operate in? ▼
Calaveras Materials, INC. 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 Calaveras Materials, INC. rank nationally on OSHA penalties? ▼
Among the 99,447 U.S. employers with a nonzero current OSHA penalty in PlainWorker's corpus, Calaveras Materials, INC. ranks #40,700 (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 Calaveras Materials, INC.'s safety record compare to industry average? ▼
Calaveras Materials, INC.'s total OSHA penalty of $8,220 is above the Mining, Quarrying, Oil & Gas industry average of $4,539 per employer (1.8x the average). The employer has 3 inspections compared to the industry average of 2.2 per employer. For a direct comparison, Mpis Environmental, LLC in Houston, TX is a similar mining, quarrying, oil & gas employer with $8,315 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 3 inspections on record. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026.