Onyx Energy, LLC operator
Controlled by
Mohegan Energy Trustees LLC
MSHA operator ID: 0098205
Watch this operator
Email me when a new MSHA incident is filed at any Onyx Energy, LLC mine.
- Fatalities
- 0
- Total incidents
- 13
- Mines on record
- 5
- Years on record
- 2013–2026
Compliance record
MSHA citations since 2009
298
citations
58
significant & substantial
$159,633
proposed penalties
$51,050
paid to date
Source: MSHA violations data, updated weekly.
Top causes
- HANDLING OF MATERIALS 4 non-fatal
- SLIP OR FALL OF PERSON 3 non-fatal
- HANDTOOLS (NONPOWERED) 2 non-fatal
- MACHINERY 2 non-fatal
- FIRE 1 non-fatal
- POWERED HAULAGE 1 non-fatal
Incident timeline
2026
1
2024
1
2023
1
2022
1
2021
1
2018
1
2017
2
2016
3
2015
1
2013
1