MEYERSDALE, Somerset County,
PA
·
Temporarily Idled
MSHA Mine ID: 3610150
MAST MINE has $354K in proposed MSHA penalties and $210K outstanding across 2 contested dockets, plus health sampling and the full incident record.
Watch this mine
Email me when a new MSHA incident is filed at MAST MINE.
Fatalities
0
Total incidents
2
Years on record
2021–2024
Latest incident
Jul 2024
Compliance record
MSHA citations since 2015
250
citations
61
significant & substantial
$353,651
proposed penalties
$143,695
paid to date
41% of proposed penalties paid to date, a $209,956 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2015
36
inspections on record
2,686
inspection hours
9.3
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.
250 citations across 2,686 inspection hours.
Source: MSHA inspections data, updated weekly.
MAST MINE has $354K in proposed MSHA penalties and $210K outstanding across 2 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.
$354K
proposed penalties
$354K
current assessed
$144K
paid to date
$210K
outstanding
245 assessments are final orders; 2 contested dockets.
As of the most recent assessment on 2025-05-19.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
MSHA sampling at MAST MINE shows respirable coal dust averaging 0.13 mg/m3 (100% compliant) across 395 samples.
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.
Respirable coal dust
ⓘRespirable coal dust and silica figures cover coal facilities. Dust compliance is measured against the current 1.5 mg/m3 standard; samples predating the 2014 standard are included, so compliance rates are a coarse historical signal.
Quarterly safety rates
ⓘCitations per million reported employee-hours. Rates begin in 2000, when MSHA's quarterly employment data starts; earlier incidents are counted but cannot be rate-adjusted. 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
2025 Q3
3,060
0
0
0.0
2025 Q2
15,652
5
0
319.4
2025 Q1
41,354
3
1
72.5
2024 Q4
42,849
18
1
420.1
2024 Q3
33,474
10
1
298.7
2024 Q2
43,355
25
11
576.6
2024 Q1
37,259
12
3
322.1
2023 Q4
44,581
0
0
0.0
Show 32 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2023 Q3
44,144
13
0
294.5
2023 Q2
38,569
0
0
0.0
2023 Q1
39,793
16
4
402.1
2022 Q4
37,252
0
0
0.0
2022 Q3
37,937
11
4
290.0
2022 Q2
43,815
0
0
0.0
2022 Q1
38,451
16
5
416.1
2021 Q4
39,987
0
0
0.0
2021 Q3
32,679
14
4
428.4
2021 Q2
30,245
0
0
0.0
2021 Q1
21,315
10
5
469.2
2020 Q4
21,277
0
0
0.0
2020 Q3
11,559
12
6
1038.2
2020 Q2
19,859
0
0
0.0
2020 Q1
16,050
7
3
436.1
2019 Q4
9,097
0
0
0.0
2019 Q3
18,095
18
5
994.7
2019 Q2
26,251
2
0
76.2
2019 Q1
29,208
11
1
376.6
2018 Q4
29,095
0
0
0.0
2018 Q3
21,296
10
0
469.6
2018 Q2
22,003
0
0
0.0
2018 Q1
16,083
12
2
746.1
2017 Q4
14,652
0
0
0.0
2017 Q3
10,888
14
4
1285.8
2017 Q2
7,821
0
0
0.0
2017 Q1
8,980
2
0
222.7
2016 Q4
4,135
3
0
725.5
2016 Q3
76
0
0
0.0
2016 Q2
217
0
0
0.0
2016 Q1
1,388
0
0
0.0
2015 Q4
1,190
6
1
5042.0
No fatalities recorded at this mine.
Reportable incidents
2 on file
2024 · 1 incident
July 10, 2024PA · Coalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDTOOLS (NONPOWERED)
3/4" black PVC caustic line plugged. Employee turned the feed pump power off and disconnected the outlet end of the line and got sprayed with caustic soda(sodium hydroxide solution) mainly on EE's face. Personal Protective Equipment was available at the site for use and there is a sign posted at location stating "Safety equipment must be used".
For insurers, brokers, and safety consultants
The full compliance file on MAST MINE
A dated report covering the 26-year penalty trail, line-item violation pattern, contest and
docket posture, rate-normalized peer benchmark, and full fatality history. Delivered as a PDF
with the underlying data as CSV.