Mining Incidents

TONGUE RIVER STONE INC Metal/Non-Metal

Sheridan, Sheridan County, WY  ·  Intermittent
MSHA Mine ID: 4800017

TONGUE RIVER STONE INC has $19K in proposed MSHA penalties and $4K outstanding across 0 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
0
Years on record
Latest incident
Compliance record
MSHA citations since 2000
107
citations
29
significant & substantial
$19,128
proposed penalties
$14,707
paid to date
77% of proposed penalties paid to date, a $4,421 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
59
inspections on record
791
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: 791 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

TONGUE RIVER STONE INC has $19K in proposed MSHA penalties and $4K 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.
$19K
proposed penalties
$19K
current assessed
$15K
paid to date
$4K
outstanding
107 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2025-11-20.
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 Q3 2,473 0 0 0.0
2025 Q2 1,922 4 0 2081.2
2025 Q1 869 0 0 0.0
2024 Q4 738 11 4 14905.1
2024 Q3 1,621 0 0 0.0
2024 Q2 2,136 2 0 936.3
2024 Q1 3,296 1 0 303.4
2023 Q4 960 0 0 0.0
Show 94 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2023 Q3 960 5 2 5208.3
2023 Q2 960 0 0 0.0
2023 Q1 40 0 0 0.0
2022 Q4 800 2 0 2500.0
2022 Q3 960 3 1 3125.0
2022 Q2 1,440 0 0 0.0
2022 Q1 441 0 0 0.0
2021 Q4 684 0 0 0.0
2021 Q3 960 0 0 0.0
2021 Q2 993 0 0 0.0
2021 Q1 263 0 0 0.0
2020 Q4 960 0 0 0.0
2020 Q3 1,514 3 0 1981.5
2020 Q2 1,440 0 0 0.0
2019 Q4 800 0 0 0.0
2019 Q3 840 0 0 0.0
2019 Q2 2,400 0 0 0.0
2019 Q1 420 0 0 0.0
2018 Q4 1,329 0 0 0.0
2018 Q3 1,330 0 0 0.0
2018 Q2 1,560 10 7 6410.3
2018 Q1 60 0 0 0.0
2017 Q4 960 0 0 0.0
2017 Q3 960 0 0 0.0
2017 Q2 320 2 0 6250.0
2017 Q1 120 0 0 0.0
2016 Q4 640 0 0 0.0
2016 Q3 960 0 0 0.0
2016 Q2 960 0 0 0.0
2016 Q1 250 0 0 0.0
2015 Q4 360 2 0 5555.6
2015 Q3 360 0 0 0.0
2015 Q2 720 1 0 1388.9
2015 Q1 0 0 0
2014 Q4 120 0 0 0.0
2014 Q3 70 1 0 14285.7
2014 Q2 260 1 0 3846.2
2014 Q1 50 0 0 0.0
2013 Q4 140 1 0 7142.9
2013 Q3 160 0 0 0.0
2013 Q2 80 0 0 0.0
2013 Q1 10 2 0 200000.0
2012 Q4 720 0 0 0.0
2012 Q3 960 0 0 0.0
2012 Q2 1,900 0 0 0.0
2012 Q1 1,040 0 0 0.0
2011 Q4 1,440 0 0 0.0
2011 Q3 1,250 1 0 800.0
2011 Q2 480 0 0 0.0
2011 Q1 960 0 0 0.0
2010 Q4 0 0 0
2010 Q3 2,480 0 0 0.0
2010 Q2 2,400 0 0 0.0
2010 Q1 160 0 0 0.0
2009 Q4 960 7 3 7291.7
2009 Q3 2,400 0 0 0.0
2009 Q2 2,640 0 0 0.0
2009 Q1 2,880 0 0 0.0
2008 Q4 1,040 2 0 1923.1
2008 Q3 1,680 0 0 0.0
2008 Q2 2,160 0 0 0.0
2008 Q1 320 10 6 31250.0
2007 Q4 960 0 0 0.0
2007 Q3 960 0 0 0.0
2007 Q2 960 0 0 0.0
2007 Q1 327 0 0 0.0
2006 Q4 720 1 0 1388.9
2006 Q3 480 3 1 6250.0
2006 Q2 2,880 0 0 0.0
2006 Q1 480 0 0 0.0
2005 Q4 240 0 0 0.0
2005 Q3 640 0 0 0.0
2005 Q2 480 0 0 0.0
2005 Q1 960 0 0 0.0
2004 Q4 960 0 0 0.0
2004 Q3 1,920 1 0 520.8
2004 Q2 1,920 0 0 0.0
2004 Q1 480 0 0 0.0
2003 Q4 1,120 1 0 892.9
2003 Q3 2,400 1 0 416.7
2003 Q2 2,400 0 0 0.0
2003 Q1 480 0 0 0.0
2002 Q4 960 0 0 0.0
2002 Q3 1,770 0 0 0.0
2002 Q2 1,438 5 1 3477.1
2002 Q1 1,171 0 0 0.0
2001 Q4 960 0 0 0.0
2001 Q3 1,739 3 0 1725.1
2001 Q2 1,625 0 0 0.0
2001 Q1 1,440 0 0 0.0
2000 Q4 1,750 0 0 0.0
2000 Q3 2,360 0 0 0.0
2000 Q2 2,020 0 0 0.0
2000 Q1 1,640 17 3 10365.9

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.

For insurers, brokers, and safety consultants

The full compliance file on TONGUE RIVER STONE INC

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.