Black Hills Bentonite LLC operator
Controlled by
BHB Limited Partnership; A&M Products
MSHA operator ID: L09605
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Email me when a new MSHA incident is filed at any Black Hills Bentonite LLC mine.
- Fatalities
- 0
- Total incidents
- 234
- Mines on record
- 8
- Years on record
- 2000–2026
Compliance record
MSHA citations since 2000
1,013
citations
250
significant & substantial
$362,386
proposed penalties
$288,132
paid to date
Source: MSHA violations data, updated weekly.
Top causes
- HANDLING OF MATERIALS 71 non-fatal
- SLIP OR FALL OF PERSON 62 non-fatal
- POWERED HAULAGE 38 non-fatal
- HANDTOOLS (NONPOWERED) 26 non-fatal
- MACHINERY 20 non-fatal
- OTHER 6 non-fatal
Incident timeline
2026
4
2025
3
2024
13
2023
12
2022
8
2021
8
2020
5
2019
9
2018
6
2017
7
2016
3
2015
7
2014
9
2013
13
2012
6
2011
12
2010
12
2009
13
2008
12
2007
8
2006
10
2005
12
2004
7
2003
6
2002
11
2001
6
2000
12
Mines on record
- Kaycee Mine WY
- Casper Plant WY
- TENSLEEP MINE WY
- Mills Plant WY
- WORLAND PLANT WY
- Thornton Plant WY
- HT Plant WY
- OSHOTO MINE WY