shamrock has $85K in proposed MSHA penalties and $302 outstanding across 7 contested dockets, plus health sampling and the full incident record.
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Fatalities
1
Total incidents
5
Years on record
2011–2015
Latest incident
Oct 2015
Compliance record
MSHA citations since 2009
69
citations
18
significant & substantial
$84,951
proposed penalties
$63,115
paid to date
74% of proposed penalties paid to date, a $21,836 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2009
47
inspections on record
720
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: 720 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
shamrock has $85K in proposed MSHA penalties and $302 outstanding across 7 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.
$85K
proposed penalties
$63K
current assessed
$63K
paid to date
$302
outstanding
65 assessments are final orders; 7 contested dockets.
As of the most recent assessment on 2026-04-22.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
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 Q4
1,078
0
0
0.0
2025 Q3
2,895
0
0
0.0
2025 Q2
3,225
0
0
0.0
2025 Q1
2,394
1
0
417.7
2024 Q4
3,043
0
0
0.0
2024 Q3
4,111
1
1
243.2
2024 Q2
3,867
0
0
0.0
2024 Q1
2,807
0
0
0.0
Show 61 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2023 Q4
2,887
0
0
0.0
2023 Q3
2,738
2
0
730.5
2023 Q2
2,939
0
0
0.0
2023 Q1
2,901
3
1
1034.1
2022 Q4
2,555
0
0
0.0
2022 Q3
3,288
0
0
0.0
2022 Q2
2,919
0
0
0.0
2022 Q1
4,174
1
0
239.6
2021 Q4
5,875
0
0
0.0
2021 Q3
5,662
1
0
176.6
2021 Q2
5,401
0
0
0.0
2021 Q1
4,816
1
0
207.6
2020 Q4
4,027
0
0
0.0
2020 Q3
5,501
0
0
0.0
2020 Q2
5,495
0
0
0.0
2020 Q1
5,974
2
0
334.8
2019 Q4
6,780
0
0
0.0
2019 Q3
8,195
0
0
0.0
2019 Q2
6,754
0
0
0.0
2019 Q1
5,919
0
0
0.0
2018 Q4
4,398
2
1
454.8
2018 Q3
4,160
0
0
0.0
2018 Q2
5,727
1
0
174.6
2018 Q1
4,505
4
3
887.9
2017 Q4
3,263
0
0
0.0
2017 Q3
3,695
0
0
0.0
2017 Q2
5,236
0
0
0.0
2017 Q1
4,872
1
0
205.3
2016 Q4
4,789
0
0
0.0
2016 Q3
5,047
0
0
0.0
2016 Q2
5,164
1
0
193.6
2016 Q1
3,950
3
0
759.5
2015 Q4
6,188
0
0
0.0
2015 Q3
6,841
0
0
0.0
2015 Q2
5,968
3
0
502.7
2015 Q1
12,353
4
1
323.8
2014 Q4
12,993
0
0
0.0
2014 Q3
9,127
3
1
328.7
2014 Q2
9,988
0
0
0.0
2014 Q1
8,111
0
0
0.0
2013 Q4
10,327
0
0
0.0
2013 Q3
10,477
5
2
477.2
2013 Q2
9,992
5
1
500.4
2013 Q1
7,168
2
1
279.0
2012 Q4
8,351
0
0
0.0
2012 Q3
7,976
6
2
752.3
2012 Q2
10,760
1
1
92.9
2012 Q1
8,619
5
1
580.1
2011 Q4
9,420
0
0
0.0
2011 Q3
12,524
3
0
239.5
2011 Q2
10,041
0
0
0.0
2011 Q1
6,954
3
0
431.4
2010 Q4
3,901
0
0
0.0
2010 Q3
4,254
0
0
0.0
2010 Q2
2,717
1
1
368.1
2010 Q1
1,623
0
0
0.0
2009 Q4
1,220
0
0
0.0
2009 Q3
1,278
0
0
0.0
2009 Q2
1,564
0
0
0.0
2009 Q1
3,453
2
1
579.2
2008 Q4
370
0
0
0.0
Fatalities at this mine
1 recorded
April 27, 2013TX · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techFatality · POWERED HAULAGE
ACG Materials · Caught in, under or between running or meshing objects
Employee was cleaning a jammed rock from a return roller on a track mounted CEC Crusher. The engine was still running and the belt was engaged. Employee "assumed" belt was turned off because the head pulley was not spinning skipping on the belt; the belt was actually stalled. He did not lock out/ and tag the crusher before performing the work to de-energize all power.
Reportable incidents
4 on file (excluding fatalities above)
2015 · 1 incident
October 17, 2015TX · Metal/Non-Metalmine manager, mine foreman, mine ownerHANDLING OF MATERIALS
ACG Materials · Caught in, under or between a moving and a stationary object
Employee was in the shop area storing bucket pins on a storage rack. A pin fell over pinning his Right index finger between the pin and shelve causing the laceration of the finger.
2012 · 2 incidents
March 28, 2012TX · Metal/Non-Metalbulldozer operator, universal operator, heavy equipment operator, operating engineerSLIP OR FALL OF PERSON
IEE was exiting the crusher/hopper. He fell 11.5 feet to the ground on his right side. Co-workers called 911 and 25 minutes later he was gernied by the EMTs then the helicopter showed up and was mediflighted to Amarillo hospital.
February 14, 2012TX · Metal/Non-Metalbulldozer operator, universal operator, heavy equipment operator, operating engineerHANDLING OF MATERIALS
While replacing blades on scraper, lifted one and felt pain in lower back. Continued working until 11 days later when felt the injury again while in office.
For insurers, brokers, and safety consultants
The full compliance file on shamrock
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.