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Employers › CA

Mining, Quarrying, Oil & Gas · Volcano, CA

Zebroski INC DBA Quarry Stone

According to OSHA enforcement records (2010–2026), Zebroski INC DBA Quarry Stone has a relatively clean safety record: 2 violations across 3 inspections. See the full breakdown below.

Lower half by penalty0% serious
$125
OSHA penalties
2
Violations cited
3
OSHA inspections
#99,539
of 100,495 penalized employers

Zebroski INC DBA Quarry Stone in Volcano, CA has been the subject of 3 OSHA workplace inspections and 2 citations since 2010, according to enforcement records from the U.S. Department of Labor. Total penalties assessed: $125. All enforcement data below is sourced from the DOL public enforcement databases at data.dol.gov.

The record in one line

OSHA has inspected Zebroski INC DBA Quarry Stone 3 times over 3 years, roughly annually. These inspections resulted in 2 violations, averaging 0.7 per inspection, on the lighter side. Its total OSHA penalty ranks in the lower half of penalized employers nationally. Against the Mining, Quarrying, Oil & Gas industry average of 2 inspections per employer, this runs moderately above peers (1.4x the sector average) on inspection frequency. For comparison, Upland Rock INC in Mentone, CA is another mining, quarrying, oil & gas employer with 5 OSHA inspections on record and $130 in current penalties.

0.7
violations per inspection
0.0%
of violations were serious
1%
of penalized employers rank lower

How Zebroski INC DBA Quarry Stone compares on OSHA penalties

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

in penalties

What this shows Zebroski INC DBA Quarry Stone runs well below peers (0.03x 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

$125 Top 1% most affordable more affordable than 99% of 100,495 U.S. employers with a penalty

$0–$5,000: 44,435 U.S. employers with a penalty (44%). This entry sits in this band. $5,000–$10,000: 20,628 U.S. employers with a penalty (21%). Above this entry. $10,000–$15,000: 11,165 U.S. employers with a penalty (11%). Above this entry. $15,000–$20,000: 6,629 U.S. employers with a penalty (7%). Above this entry. $20,000–$25,000: 4,205 U.S. employers with a penalty (4%). Above this entry. $25,000–$30,000: 2,885 U.S. employers with a penalty (3%). Above this entry. $30,000–$35,000: 2,052 U.S. employers with a penalty (2%). Above this entry. $35,000–$40,000: 1,483 U.S. employers with a penalty (1%). Above this entry. $40,000–$45,000: 1,120 U.S. employers with a penalty (1%). Above this entry. $45,000–$50,000: 792 U.S. employers with a penalty (1%). Above this entry. $50,000–$55,000: 5,101 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

What the Data Says About Zebroski INC DBA Quarry Stone

The federal enforcement record for Zebroski INC DBA Quarry Stone in Volcano, CA includes 3 OSHA inspections and 2 violations, translating to 0.67 violations per inspection. Of those violations, 0 (0.0%) were classified as serious, 0 (0.0%) as willful, and 0 (0.0%) as repeat.

OSHA assessed $125 in initial penalties against this employer, later adjusted to a current total of $125 - no reduction from the original assessment. Average penalty per inspection works out to $42. Against the Mining, Quarrying, Oil & Gas industry average of $4,394 per employer, this record runs well below peers (0.03x the sector average).

Inspection activity spans from 2010-08-17 to 2013-05-02, a window of roughly 3 years.

Enforcement detail

OSHA Inspection History

Total Inspections

3

First Inspection

2010-08-17

Last Inspection

2013-05-02

Inspection Span

3 yrs

Violations / Inspection

0.7

Avg Penalty / Inspection

$42

Industry Avg / Inspection

$2,034

What this shows 3 inspections over 3 years, averaging 0.7 violations per visit. That's $42 per inspection vs. the Mining, Quarrying, Oil & Gas average of $2,034.

Enforcement detail

Violation Breakdown

0

Serious

0.0% of total

0

Willful

0.0% of total

0

Repeat

0.0% of total

2

Other-Than-Serious

100.0% 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

$125

Current Penalty Amount

$125

Penalty Reduction

None

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

Industry Safety Context: Mining, Quarrying, Oil & Gas

How Zebroski INC DBA Quarry Stone compares to the Mining, Quarrying, Oil & Gas sector, which has 2,359 employers tracked by PlainWorker.

Metric Zebroski INC DBA Quarry Stone Industry Avg
Inspections 3 2.2
Violations 2 3.1
Total Penalty $125 $4,394
Avg Penalty per Inspection $42 $2,034
View all 2,359 employers in Mining, Quarrying, Oil & Gas →

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

Double D Mining, LLC
Blythe, CA
5 inspections $125
Tapo Rock and Sand, INC.
Simi Valley, CA
4 inspections $130
Upland Rock INC
Mentone, CA
5 inspections $130
Frank B. Marks & Son, INC.
Newman, CA
3 inspections $135
C Smith Corporation
Corona, CA
2 inspections $110

Compare Zebroski INC DBA Quarry Stone vs Double D Mining, LLC side-by-side →

Frequently Asked Questions

Is Zebroski INC DBA Quarry Stone safe to work at? ▼
Based on OSHA records, Zebroski INC DBA Quarry Stone's workplace safety record is relatively clean, with fewer violations than typical. The employer has 2 violations across 3 inspections. Compared to Mining, Quarrying, Oil & Gas industry peers, this is below average for penalties. Review the full inspection history below for details.
How many OSHA violations does Zebroski INC DBA Quarry Stone have? ▼
Zebroski INC DBA Quarry Stone has 2 OSHA violations on record, including 0 serious, 0 willful, and 0 repeat violations. The total current penalty amount is $125.
How many OSHA inspections has Zebroski INC DBA Quarry Stone had? ▼
Zebroski INC DBA Quarry Stone has had 3 OSHA inspections, with the first recorded on 2010-08-17 and the most recent on 2013-05-02. This averages 0.7 violations per inspection.
What is the total penalty amount for Zebroski INC DBA Quarry Stone? ▼
Zebroski INC DBA Quarry Stone has been assessed $125 in current OSHA penalties.
What industry does Zebroski INC DBA Quarry Stone operate in? ▼
Zebroski INC DBA Quarry Stone operates in the Mining, Quarrying, Oil & Gas sector (NAICS code 212321). This industry has 2,359 employers tracked by PlainWorker, with 5,096 total OSHA inspections and $10.36M in cumulative penalties.
How does Zebroski INC DBA Quarry Stone's safety record compare to industry average? ▼
Zebroski INC DBA Quarry Stone's total OSHA penalty of $125 is below the Mining, Quarrying, Oil & Gas industry average of $4,394 per employer. The employer has 3 inspections compared to the industry average of 2.2 per employer. For a direct comparison, Upland Rock INC in Mentone, CA is a similar mining, quarrying, oil & gas employer with $130 in current penalties.

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Mining, Quarrying, Oil & Gas Industry

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What to check next

Zebroski INC DBA Quarry Stone's record is one establishment in a larger pattern. Use it as a research checklist, not a verdict on the employer overall.

These figures are the federal enforcement record on file and reflect past inspections, not a statement about current workplace conditions. See the disclaimer for how to read them.

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.