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Employers › CA

Mining, Quarrying, Oil & Gas · Ione, CA

US Mine Corporation

According to OSHA enforcement records (2010–2026), US Mine Corporation has a concerning safety record: 32 violations across 7 inspections. See the full breakdown below.

Top 5% by penalty13% serious
$54,095
OSHA penalties
32
Violations cited
7
OSHA inspections
#4,532
of 100,495 penalized employers

US Mine Corporation in Ione, CA has been the subject of 7 OSHA workplace inspections and 32 citations since 2010, according to enforcement records from the U.S. Department of Labor. Total penalties assessed: $54,095. All enforcement data below is sourced from the DOL public enforcement databases at data.dol.gov.

The record in one line

OSHA has inspected US Mine Corporation 7 times over 9 years, roughly once every couple of years. These inspections resulted in 32 violations, averaging 4.6 per inspection, above what's typical for a single visit. Its total OSHA penalty ranks in the top 5% of penalized employers nationally. Of these, 4 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 (3.2x the sector average) on inspection frequency. For comparison, Hilcorp Alaska, LLC in Nikiski, AK is another mining, quarrying, oil & gas employer with 11 OSHA inspections on record and $55,419 in current penalties.

4.6
violations per inspection
12.5%
of violations were serious
95%
of penalized employers rank lower

How US Mine Corporation compares on OSHA penalties

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

in penalties

What this shows US Mine Corporation runs far above peers (12.3x 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

$54,095 Bottom 5% least affordable more affordable than 5% of 100,495 U.S. employers with a penalty

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

The federal enforcement record for US Mine Corporation in Ione, CA includes 7 OSHA inspections and 32 violations, translating to 4.57 violations per inspection. Of those violations, 4 (12.5%) were classified as serious, 0 (0.0%) as willful, and 4 (12.5%) as repeat. Serious violations denote hazards likely to cause death or serious physical harm; willful and repeat categories indicate intentional disregard or recurrence of previously cited hazards.

OSHA assessed $85,195 in initial penalties against this employer, later adjusted to a current total of $54,095 - a 36.5% reduction. Average penalty per inspection works out to $7,728. Against the Mining, Quarrying, Oil & Gas industry average of $4,394 per employer, this record runs far above peers (12.3x the sector average).

Inspection activity spans from 2017-06-01 to 2025-12-10, a window of roughly 9 years.

Enforcement detail

OSHA Inspection History

Total Inspections

7

First Inspection

2017-06-01

Last Inspection

2025-12-10

Inspection Span

9 yrs

Violations / Inspection

4.6

Avg Penalty / Inspection

$7,728

Industry Avg / Inspection

$2,034

What this shows 7 inspections over 9 years, averaging 4.6 violations per visit. That's $7,728 per inspection vs. the Mining, Quarrying, Oil & Gas average of $2,034.

Enforcement detail

Violation Breakdown

4

Serious

12.5% of total

0

Willful

0.0% of total

4

Repeat

12.5% of total

24

Other-Than-Serious

75.0% 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

$85,195

Current Penalty Amount

$54,095

Penalty Reduction

36.5%

What this shows Penalties were reduced by $31,100 from the initial assessment of $85,195. Reductions may result from informal settlements, formal contests, or negotiated agreements with OSHA.

Industry Safety Context: Mining, Quarrying, Oil & Gas

How US Mine Corporation compares to the Mining, Quarrying, Oil & Gas sector, which has 2,359 employers tracked by PlainWorker.

Metric US Mine Corporation Industry Avg
Inspections 7 2.2
Violations 32 3.1
Total Penalty $54,095 $4,394
Avg Penalty per Inspection $7,728 $2,034
View all 2,359 employers in Mining, Quarrying, Oil & Gas →

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

Bradford Gravel Co.
Jackson, AL
0 inspections $0
Prime Controls
Amarillo, TX
0 inspections $0
H & M Energy Services
Blanchard, OK
0 inspections $0
Hilcorp Alaska, LLC
Nikiski, AK
11 inspections $55,419
Pumpco Energy Services, INC.
Valley View, TX
2 inspections $52,650

Compare US Mine Corporation vs Bradford Gravel Co. side-by-side →

Frequently Asked Questions

Is US Mine Corporation safe to work at? ▼
Based on OSHA records, US Mine Corporation's workplace safety record is concerning, with multiple serious compliance issues. The employer has 32 violations across 7 inspections, including 4 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 US Mine Corporation have? ▼
US Mine Corporation has 32 OSHA violations on record, including 4 serious, 0 willful, and 4 repeat violations. The total current penalty amount is $54,095.
How many OSHA inspections has US Mine Corporation had? ▼
US Mine Corporation has had 7 OSHA inspections, with the first recorded on 2017-06-01 and the most recent on 2025-12-10. This averages 4.6 violations per inspection.
What is the total penalty amount for US Mine Corporation? ▼
US Mine Corporation has been assessed $54,095 in current OSHA penalties, reduced from an initial assessment of $85,195 (a 36.5% reduction).
Does US Mine Corporation have any serious or willful violations? ▼
Yes. US Mine Corporation has 4 serious violations, and 4 repeat 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 US Mine Corporation operate in? ▼
US Mine Corporation 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 US Mine Corporation's safety record compare to industry average? ▼
US Mine Corporation's total OSHA penalty of $54,095 is above the Mining, Quarrying, Oil & Gas industry average of $4,394 per employer (12.3x the average). The employer has 7 inspections compared to the industry average of 2.2 per employer. For a direct comparison, Hilcorp Alaska, LLC in Nikiski, AK is a similar mining, quarrying, oil & gas employer with $55,419 in current penalties.

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Mining, Quarrying, Oil & Gas Industry

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What to check next

US Mine Corporation'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 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.