PlainWorker
Employers › CA

Mining, Quarrying, Oil & Gas · San Juan Capistrano, CA

Greenstone Materials, INC.

According to OSHA enforcement records (2010–2026), Greenstone Materials, INC. ranks #55,488 of 99,447 penalized U.S. employers by total current penalty, with a mixed safety record: 8 violations across 5 inspections.

Lower half by penalty13% serious
$5,000
OSHA penalties
8
Violations cited
5
OSHA inspections
#55,488
of 99,447 penalized employers

Greenstone Materials, INC. in San Juan Capistrano, CA has been the subject of 5 OSHA workplace inspections and 8 citations since 2010, according to enforcement records from the U.S. Department of Labor. Total penalties assessed: $5,000. Separately, the Department of Labor's Wage and Hour Division found $74,505 in back wages owed to 40 affected workers. All enforcement data below is sourced from the DOL public enforcement databases at data.dol.gov.

The record in one line

OSHA has inspected Greenstone Materials, INC. 5 times across a longer 11-year span, an infrequent cadence. These inspections resulted in 8 violations, averaging 1.6 per inspection. According to OSHA enforcement records, its total current penalty ranks #55,488 of 99,447 penalized U.S. employers (the lower 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 (2.2x the sector average) on inspection frequency. The Department of Labor also found wage violations, with $74,505 in back wages owed to 40 affected workers. For comparison, Schlumberger in Brookville, PA is another mining, quarrying, oil & gas employer with 0 OSHA inspections on record and $0 in current penalties.

1.6
violations per inspection
12.5%
of violations were serious
#55,488
of 99,447 penalized employers
$74,505
in back wages recovered

Compliance score

F 34/100
  • C OSHA safety compliance: 8 violations across 5 OSHA inspections (1.6 per inspection), vs. national p10 0.0 (best) / p90 5.5 (worst) among 145,626 inspected employers.
  • F Wage & hour compliance: $75K in back wages owed across 1 WHD case ($75K per case), vs. national p10 $2K (best) / p90 $58K (worst) among 91,622 employers with a WHD case on file.
Open my watchlist

How Greenstone Materials, INC. compares on OSHA penalties

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

in penalties

What this shows Greenstone Materials, INC. sits roughly in line with peers (1.1x 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

$5,000 Top 44% most affordable more affordable than 56% 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 Greenstone Materials, INC..

Frequently inspected, many findingsRarely inspected, many findingsFrequently inspected, clean recordBelow median on both3.94.555.56.1010.821.532.343.0OSHA inspectionsViolations citedCOG OPERATING LLC, OSHA inspections: 5 · Violations cited: 0STALLION OILFIELD SE…, OSHA inspections: 5 · Violations cited: 0ESS SUPPORT SERVICES, OSHA inspections: 5 · Violations cited: 5HELMERICH & PAYNE IN…, OSHA inspections: 5 · Violations cited: 9BASIC ENERGY SERVICES, OSHA inspections: 5 · Violations cited: 4NABORS ALASKA DRILLI…, OSHA inspections: 5 · Violations cited: 4PRECISION DRILLING, OSHA inspections: 5 · Violations cited: 2CHESAPEAKE ENERGY CO…, OSHA inspections: 5 · Violations cited: 0PEAK OILFIELD SERVIC…, OSHA inspections: 5 · Violations cited: 1WESTERN GAS PARTNERS…, OSHA inspections: 5 · Violations cited: 13SMITHBRIDGE GUAM, INC., OSHA inspections: 5 · Violations cited: 11HELMERICH & PAYNE, I…, OSHA inspections: 5 · Violations cited: 3TANMAR COMPANIES LLC, OSHA inspections: 5 · Violations cited: 1PRIMEXX OPERATING CO…, OSHA inspections: 5 · Violations cited: 0ENTERPRISE PRODUCTS …, OSHA inspections: 4 · Violations cited: 20EUREKA RESOURCES LLC, OSHA inspections: 6 · Violations cited: 18VANN ENERGY SERVICES…, OSHA inspections: 4 · Violations cited: 41DOYON DRILLING INC, OSHA inspections: 6 · Violations cited: 7DOYON UNIVERSAL SERV…, OSHA inspections: 6 · Violations cited: 4MCGOWN DRILLING, INC., OSHA inspections: 4 · Violations cited: 5Greenstone Materials…, OSHA inspections: 5 · Violations cited: 8
Greenstone Materials, INC. has 5 OSHA inspections on record and 8 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.

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

Mining, Quarrying, Oil & Gas sector: Greenstone Materials, INC. is the #471 heaviest OSHA penalty carrier of 1,117 employers with nonzero fines ($5,000). On wage-and-hour enforcement alone, Greenstone Materials, INC. ranks #138 among 717 Mining, Quarrying, Oil & Gas employers with WHD recoveries ($74,505).

Combined federal exposure here: $5,000 OSHA penalties plus $74,505 WHD back wages (93.7% of the combined total is wage recovery).

How Greenstone Materials, INC. Compares

Greenstone Materials, INC.'s 1.60 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 sits roughly in line with peers (1.1x the sector average).

Enforcement detail

OSHA Inspection History

Total Inspections

5

First Inspection

2014-12-10

Last Inspection

2026-01-22

Inspection Span

11 yrs

Violations / Inspection

1.6

Avg Penalty / Inspection

$1,000

Industry Avg / Inspection

$2,042

What this shows 5 inspections over 11 years, averaging 1.6 violations per visit. That's $1,000 per inspection vs. the Mining, Quarrying, Oil & Gas average of $2,042.

Enforcement detail

Violation Breakdown

1

Serious

12.5% of total

0

Willful

0.0% of total

0

Repeat

0.0% of total

7

Other-Than-Serious

87.5% 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

$5,000

Current Penalty Amount

$5,000

Penalty Reduction

None

Combined Impact (OSHA + WHD)

$79,505

What this shows No reduction on record. The current penalty matches the original OSHA assessment.

Wage & Hour Findings

WHD Cases
1
Back Wages Owed
$74,505
Employees Affected
40
WHD Violations
42
Avg Back Wages per Employee
$1,863
Avg Back Wages per CaseAbove average
$74,505

The Department of Labor's Wage and Hour Division found that Greenstone Materials, INC. owed $74,505 in back wages to 40 employees across 1 case and 42 violations. WHD enforces federal labor laws including the Fair Labor Standards Act (FLSA), covering minimum wage, overtime pay, and child labor standards.

Industry Safety Context: Mining, Quarrying, Oil & Gas

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

Metric Greenstone Materials, INC. Industry Avg
Inspections 5 2.2
Violations 8 3.1
Total Penalty $5,000 $4,539
Avg Penalty per Inspection $1,000 $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 Greenstone Materials, INC., both outside CA so the neighborhoods are not geographic containment.

Similar current OSHA penalty

Nearest same-sector employers by current assessed penalty ($5,000 here).

Precision Drilling Company, LP $5,000 PA Allstream Services and Rental, LLC $5,000 OK Unit Drilling Company $5,000 TX Devon Energy Corporation $5,000 OK

Similar OSHA inspection count

Same-sector employers with a comparable inspection history outside this state (5 inspections here).

Cog Operating LLC 5 insp. Pecos, TX Stallion Oilfield Services LTD. 5 insp. Pecos, TX Ess Support Services 5 insp. Nikiski, AK Helmerich & Payne International Drilling CO. INC. 5 insp. Pecos, TX

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

Showing 5 of 2293 other employers tracked in this sector.

Techwater
Pecos, TX
0 inspections $0
Northeast Energy Management INC.
Cheswick, PA
2 inspections $80,000
Schlumberger
Brookville, PA
0 inspections $0
Targa Resources
Midland, TX
0 inspections $0
Superior Stone Inc.
Jarrell, TX
0 inspections $0

Compare Greenstone Materials, INC. vs Techwater side-by-side →

What to do with this record

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

  • A single employer's record can look unusual in isolation. Compare Greenstone Materials, INC. against Techwater, a similarly-sized employer in the same sector, before drawing conclusions. Compare side-by-side
  • See whether Greenstone 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
  • Greenstone Materials, INC. also carries $74,505 in Wage and Hour Division back-wages, a separate enforcement track from OSHA safety violations. How wage-theft enforcement works

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 Greenstone Materials, INC. safe to work at? ▼
Based on OSHA records, Greenstone Materials, INC.'s workplace safety record is mixed, with some compliance concerns. The employer has 8 violations across 5 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 Greenstone Materials, INC. have? ▼
Greenstone Materials, INC. has 8 OSHA violations on record, including 1 serious, 0 willful, and 0 repeat violations. The total current penalty amount is $5,000.
How many OSHA inspections has Greenstone Materials, INC. had? ▼
Greenstone Materials, INC. has had 5 OSHA inspections, with the first recorded on 2014-12-10 and the most recent on 2026-01-22. This averages 1.6 violations per inspection.
What is the total penalty amount for Greenstone Materials, INC.? ▼
Greenstone Materials, INC. has been assessed $5,000 in current OSHA penalties. Additionally, $74,505 in back wages were owed through WHD enforcement.
Does Greenstone Materials, INC. have any serious or willful violations? ▼
Yes. Greenstone 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.
Has Greenstone Materials, INC. been cited for wage theft? ▼
Yes. The Department of Labor's Wage and Hour Division has recorded 1 enforcement case against Greenstone Materials, INC., resulting in $74,505 in back wages owed to 40 affected workers. These cases involve violations of federal labor laws including minimum wage, overtime, and other worker protections.
What industry does Greenstone Materials, INC. operate in? ▼
Greenstone Materials, INC. operates in the Mining, Quarrying, Oil & Gas sector (NAICS code 212319). This industry has 2,294 employers tracked by PlainWorker, with 5,098 total OSHA inspections and $10.41M in cumulative penalties.
What should I do if Greenstone Materials, INC. owes me wages? ▼
If you believe Greenstone Materials, INC. owes you wages, you can file a complaint with the Department of Labor's Wage and Hour Division at dol.gov/agencies/whd/contact/complaints or by calling 1-866-487-9243. WHD investigates violations of the Fair Labor Standards Act including unpaid minimum wage, overtime, and unauthorized deductions. The DOL has previously found $74,505 in back wages owed by this employer across 1 case.
Where does Greenstone Materials, INC. rank nationally on OSHA penalties? ▼
Among the 99,447 U.S. employers with a nonzero current OSHA penalty in PlainWorker's corpus, Greenstone Materials, INC. ranks #55,488 (the lower 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 Greenstone Materials, INC.'s safety record compare to industry average? ▼
Greenstone Materials, INC.'s total OSHA penalty of $5,000 is above the Mining, Quarrying, Oil & Gas industry average of $4,539 per employer (1.1x the average). The employer has 5 inspections compared to the industry average of 2.2 per employer. For a direct comparison, Schlumberger in Brookville, PA is a similar mining, quarrying, oil & gas employer with $0 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.

Verify with OSHA establishment search →

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 5 inspections on record. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026.