Black Hills Lignite A Limited Liability Co operator
Controlled by
Thomas A Thorson
MSHA operator ID: L09648
- Fatalities
- 0
- Total incidents
- 60
- Mines on record
- 2
- Years on record
- 1989–2019
Compliance record
MSHA citations since 2000
132
citations
20
significant & substantial
$41,261
proposed penalties
$41,092
paid to date
100% of proposed penalties paid to date, a $169 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
122
inspections on record
1,759
inspection hours
7.5
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.132 citations across 1,759 inspection hours.
Source: MSHA inspections data, updated weekly.
Penalty disposition
ⓘ
Differences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.$41K
proposed penalties
$41K
current assessed
$41K
paid to date
$169
outstanding
131 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-03-17.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
Top causes
- HANDLING OF MATERIALS 33 non-fatal
- SLIP OR FALL OF PERSON 9 non-fatal
- FIRE 7 non-fatal
- MACHINERY 5 non-fatal
- POWERED HAULAGE 2 non-fatal
- ELECTRICAL 1 non-fatal
Incident timeline
2019
1
2014
1
2011
4
2010
1
2009
2
2008
4
2007
2
2006
3
2005
2
2004
2
2003
3
2000
1
1999
1
1998
3
1997
6
1996
1
1995
9
1994
2
1993
3
1992
1
1991
2
1990
4
1989
2
Mines on record
- GLENROCK MILL WY
- GLENROCK MINE WY
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The full compliance file on Black Hills Lignite A Limited Liability Co
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.