Shenango Mine: 20 MSHA citations Metal/Non-Metal
Shenango Limestone and Storage Company, LLC
· Underground
Controlled by
Jeremy W Mackall; Denise J Mackall; William T Mackall
MSHA Mine ID: 3610351
Shenango Mine has no reportable incidents on file with MSHA. MSHA has proposed $3K in penalties since 2022.
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- Fatalities
- 0
- Total incidents
- 0
- Years on record
- —
- Latest incident
- —
Compliance record
MSHA citations since 2022
20
citations
0
significant & substantial
$2,660
proposed penalties
$2,660
paid to date
100% of proposed penalties paid to date. The remaining $0 was reduced, settled, contested or is still owed.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2021
29
inspections on record
451
inspection hours
n/a
citations per 100 inspection hours
ⓘ
This rate is recorded citations divided by MSHA inspection hours, per 100 hours. It reflects inspection effort, not mine size or production.Rate withheld: 451 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Shenango Mine has $3K in proposed MSHA penalties and $0 outstanding across 0 contested dockets.
Penalty disposition
ⓘ
Differences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.$3K
proposed penalties
$3K
current assessed
$3K
paid to date
$0
outstanding
18 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-07-22.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
Violation severity profile
ⓘ
Shares are computed over citations that carry the MSHA gravity and negligence coding; a small share of records are uncoded.0.0%
significant & substantial
0.0%
high negligence or reckless
0.0%
reasonably likely or greater
21.1%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 63.2% low, 36.8% moderate, 0.0% high, 0.0% reckless.
Source: MSHA violations gravity and negligence coding, updated weekly.
Health sampling
ⓘ
A sample is a point in time compliance measurement, not an individual exposure history. These figures describe MSHA sampling records and do not establish causation or personal dose.Metal and nonmetal contaminants (personal samples)
ⓘ
Many samples are screening measurements of substances with no applicable exposure limit; they are counted as samples but excluded from every over-limit figure. Over-limit shares use only limit-tested samples.
Last sampled: 2026-10-08
ⓘ
Many samples are screening measurements of substances with no applicable exposure limit; they are counted as samples but excluded from every over-limit figure. Over-limit shares use only limit-tested samples.0%
of limit-tested samples over the exposure limit
16
samples
7
limit-tested
Most sampled contaminants
- Respirable dust, <.1mg8
- Diesel particulate7
- Quartz, respirable, >1% Qtz1
Show the individual readings (37)
| Date | Contaminant | Concentration | Limit | Conc / limit | Occupation |
|---|---|---|---|---|---|
| 2026-10-08 | ORGANIC CARBON | 0 | Roof Bolter, Rock | ||
| 2026-10-08 | EC @ 160 | 78 | 160 | 0.49 | Roof Bolter, Rock |
| 2026-10-08 | TC from EC @ 160 | 0 | 160 | 0.00 | Roof Bolter, Rock |
| 2026-10-08 | ORGANIC CARBON | 0 | Drill Operator, Jumbo Perc. | ||
| 2026-10-08 | TC @ 160 | 111 | 160 | 0.69 | Drill Operator, Jumbo Perc. |
| 2026-10-08 | EC @ 160 | 87 | 160 | 0.54 | Drill Operator, Jumbo Perc. |
| 2026-10-08 | TC from EC @ 160 | 0 | 160 | 0.00 | Drill Operator, Jumbo Perc. |
| 2026-10-08 | Quartz, respirable, >1% Qtz | 0.16 | Utility Man | ||
| 2026-10-08 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2026-10-08 | TC @ 160 | 98 | 160 | 0.61 | Roof Bolter, Rock |
| 2026-04-15 | TC from EC @ 160 | 0 | 160 | 0.00 | Utility Man |
| 2026-04-15 | EC @ 160 | 0 | 160 | 0.00 | Utility Man |
| 2026-04-15 | TC @ 160 | 0 | 160 | 0.00 | Utility Man |
| 2026-04-15 | TC from EC @ 160 | 0 | 160 | 0.00 | Utility Man |
| 2026-04-15 | ORGANIC CARBON | 0 | Utility Man | ||
| 2026-04-15 | ORGANIC CARBON | 0 | Utility Man | ||
| 2026-04-15 | TC @ 160 | 87 | 160 | 0.54 | Utility Man |
| 2026-04-15 | EC @ 160 | 60 | 160 | 0.38 | Utility Man |
| 2025-01-07 | ORGANIC CARBON | 0 | Scaling (mechanical) | ||
| 2025-01-07 | TC from EC @ 160 | 0 | 160 | 0.00 | Scaling (mechanical) |
| 2025-01-07 | EC @ 160 | 0 | 160 | 0.00 | Scaling (mechanical) |
| 2025-01-07 | TC @ 160 | 0 | 160 | 0.00 | Scaling (mechanical) |
| 2024-07-02 | TC from EC @ 160 | 0 | 160 | 0.00 | Scaling (mechanical) |
| 2024-07-02 | ORGANIC CARBON | 0 | Scaling (mechanical) | ||
| 2024-07-02 | TC @ 160 | 0 | 160 | 0.00 | Scaling (mechanical) |
| 2024-07-02 | EC @ 160 | 0 | 160 | 0.00 | Scaling (mechanical) |
| 2023-02-01 | EC @ 160 | 0 | 160 | 0.00 | Laborer, Bullgang |
| 2023-02-01 | ORGANIC CARBON | 0 | Laborer, Bullgang | ||
| 2023-02-01 | TC @ 160 | 0 | 160 | 0.00 | Laborer, Bullgang |
| 2023-02-01 | TC from EC @ 160 | 0 | 160 | 0.00 | Laborer, Bullgang |
| 2023-01-04 | Respirable dust, <.1mg | 0 | Backhoe Operator | ||
| 2023-01-04 | Respirable dust, <.1mg | 0 | Truck Driver | ||
| 2023-01-04 | Respirable dust, <.1mg | 0 | Bulldozer Operator | ||
| 2022-04-01 | Respirable dust, <.1mg | 0 | Bulldozer Operator | ||
| 2022-04-01 | Respirable dust, <.1mg | 0 | Truck Driver | ||
| 2022-04-01 | Respirable dust, <.1mg | 0 | Truck Driver | ||
| 2022-04-01 | Respirable dust, <.1mg | 0 | Backhoe Operator |
Area samples (mill and shop air)
Last sampled: 2026-10-085
samples
Show the individual readings (10)
| Date | Contaminant | Concentration | Limit | Conc / limit | Area sampled |
|---|---|---|---|---|---|
| 2026-10-08 | TC @ 160 | 0 | UG TRAVEL/HAULAGE | ||
| 2026-10-08 | EC @ 160 | 0 | UG TRAVEL/HAULAGE | ||
| 2026-04-15 | EC @ 160 | 0 | UG ACTIVE MINING | ||
| 2026-04-15 | TC @ 160 | 0 | UG ACTIVE MINING | ||
| 2025-01-07 | TC @ 160 | 0 | UG ACTIVE MINING | ||
| 2025-01-07 | EC @ 160 | 0 | UG ACTIVE MINING | ||
| 2024-07-02 | TC @ 160 | 0 | UG ACTIVE MINING | ||
| 2024-07-02 | EC @ 160 | 0 | UG ACTIVE MINING | ||
| 2023-02-01 | EC @ 160 | 0 | UG ACTIVE MINING | ||
| 2023-02-01 | TC @ 160 | 0 | UG ACTIVE MINING |
Source: MSHA respirable dust, quartz, and noise sampling records, updated weekly. Metal/nonmetal contaminant figures come from MSHA's Personal Health Samples and Area Samples files (public record), updated weekly.
Shenango Mine recorded 0.00 reportable injury cases per 100 full-time workers in 2025.
Injury rate, 2025
ⓘ
This rate is reportable injury cases per 100 full-time-equivalent workers per year, computed as 200,000 times cases divided by MSHA operator-reported employee-hours. Cases are injuries MSHA graded degree 01 through 07; accident-only events that hurt no one are excluded, and so are contractor injuries, whose hours do not attach to a single mine. Rates begin in 2000 and are withheld below 20,000 hours in a year. Employment reports reach back to 1983, but those earlier years come from MSHA's archived file format and are not used in rates.0.00
total case rate
0.00
days-away rate
0.000
fatality rate
No reportable injury cases in any year shown. Employee-hours were reported in each of those years, so these are true zeros rather than missing data. Citations, listed in the compliance record above, are inspector-found violations and are counted separately from worker injuries.
Below average. The US metal and nonmetal mining average was 1.65 and the all-US-mining average was 1.98 cases per 100 workers.
In Pennsylvania, metal and nonmetal mining averaged 2.07 cases per 100 workers that year.
Under 100,000 employee-hours were reported that year, so a single case moves the rate by two or more. Read the figure as approximate.
Source: injury cases from MSHA accident and injury records; employee-hours from MSHA quarterly employment reports. Rate is cases per 100 full-time-equivalent workers, operator employees only.
Ownership history
- Shenango Limestone and Storage Company, LLC 2020 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
| Year | Employees |
|---|---|
| 2026 | 10 |
| 2025 | 9 |
| 2024 | 6 |
| 2023 | 8 |
| 2022 | 9 |
| 2021 | 6 |
Source: MSHA quarterly employment and production, updated weekly; years before 2000 come from MSHA's archived Part 50 employment files.
Shenango Mine sits in Lawrence County, Pennsylvania, where the Census mining category is 0.2% of county employment.
Local economic context
ⓘ
County figures come from the US Census Bureau's American Community Survey, 5-year pooled estimates, so the 2023 vintage covers 2019 through 2023. The Census category is 'mining, quarrying, and oil and gas extraction', which is broader than MSHA jurisdiction and includes oil and gas workers no mine employs. These figures describe the surrounding county, not this mine, and are not a factor in any specific incident.Lawrence County, Pennsylvania · Population 85,423
0.2%
Mining share of county employment
$60,779
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
Quarterly safety rates
ⓘ
Citations per million reported employee-hours. Rates begin in 2000; earlier incidents are counted but not rate-adjusted, though reported hours reach back to 1983. Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.Citations per million employee-hours, as reported to MSHA
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2026 Q2 | 6,238 | 2 | 0 | 320.6 |
| 2026 Q1 | 5,559 | 3 | 0 | 539.7 |
| 2025 Q4 | 6,662 | 2 | 0 | 300.2 |
| 2025 Q3 | 6,532 | 2 | 0 | 306.2 |
| 2025 Q2 | 5,255 | 1 | 0 | 190.3 |
| 2025 Q1 | 6,289 | 1 | 0 | 159.0 |
| 2024 Q4 | 4,777 | 0 | 0 | 0.0 |
| 2024 Q3 | 4,219 | 0 | 0 | 0.0 |
Show 12 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2024 Q2 | 2,758 | 0 | 0 | 0.0 |
| 2024 Q1 | 2,507 | 0 | 0 | 0.0 |
| 2023 Q4 | 2,990 | 0 | 0 | 0.0 |
| 2023 Q3 | 3,957 | 1 | 0 | 252.7 |
| 2023 Q2 | 3,546 | 0 | 0 | 0.0 |
| 2023 Q1 | 3,918 | 2 | 0 | 510.5 |
| 2022 Q4 | 5,208 | 1 | 0 | 192.0 |
| 2022 Q3 | 5,706 | 0 | 0 | 0.0 |
| 2022 Q2 | 3,782 | 0 | 0 | 0.0 |
| 2022 Q1 | 3,739 | 0 | 0 | 0.0 |
| 2021 Q4 | 3,456 | 0 | 0 | 0.0 |
| 2021 Q3 | 2,709 | 0 | 0 | 0.0 |
No reportable incidents on file.
MSHA has no recorded reportable accidents for this mine in the current dataset. New reports appear here within a week of being filed.