Black Thunder
MSHA mine ID 4800977 · Campbell County, WY
- Operator
- Thunder Basin Coal Company LLC
- Controller
- Core Natural Resources Inc
- Mine status
- Active since Dec 1, 1980
- Mine type
- Surface
- Primary commodity
- Coal (Bituminous)
- Citations issued
- Dec 19, 2024 to Oct 5, 2026
Past 24 months at a glance
- Inspections
- 13
- Citations and orders
- 179
- Marked S&S by MSHA
- 33
- Assessed penalties
- $70,129
173 of 179 citations have an MSHA assessment so far, first proposed at $76,454. 0 are marked contested.
Citations by standard
The 30 CFR section MSHA cited, most cited first.
| Standard | Citations | Assessed |
|---|---|---|
| 77.502 | 22 | $8,918 |
| 77.1110 | 16 | $3,948 |
| 77.1104 | 15 | $5,224 |
| 77.404(a) | 10 | $4,886 |
| 77.512 | 8 | $3,077 |
| 77.1710(g) | 7 | $5,333 |
| 77.1606(c) | 6 | $604 |
| 77.505 | 5 | $604 |
| 77.604 | 5 | $797 |
| 77.410(c) | 4 | $632 |
| 77.502-2 | 4 | $792 |
| 77.904 | 4 | $782 |
| 47.44(b) | 3 | $453 |
| 77.1605(l) | 3 | $6,575 |
| 77.400(a) | 3 | $1,554 |
| 77.807 | 3 | $495 |
| 77.1101(c) | 2 | $1,969 |
| 77.1102 | 2 | $344 |
| 77.1103(a) | 2 | $302 |
| 77.1605(b) | 2 | $517 |
| 77.1607(n) | 2 | $344 |
| 77.1710(i) | 2 | $302 |
| 77.1713(d)(1) | 2 | $697 |
| 77.202 | 2 | $4,212 |
| 77.205(a) | 2 | $439 |
Latest citations
| Issued | Assessed |
|---|---|
| Oct 5, 2026 No. 5033581 77.1606(c) | Not yet assessed |
| Oct 2, 2026 No. 5034575 77.505 | Not yet assessed |
| Oct 2, 2026 No. 5034223 77.1606(c) | Not yet assessed |
| Oct 1, 2026 No. 5034222 77.1605(l) | Not yet assessed |
| Oct 1, 2026 No. 5034221 77.602(a) | Not yet assessed |
| Oct 1, 2026 No. 5033580 77.1000 | Not yet assessed |
| Jun 8, 2026 No. 5034214 77.1110 | $432 Received |
| Jun 5, 2026 No. 5033779 77.400(a) | $366 Received |
| Jun 3, 2026 No. 5034213 77.1713(d)(1) | $504 Received |
| Jun 3, 2026 No. 5033778 77.502 | $465 Received |
| May 22, 2026 No. 5034211 77.410(c) | $151 Received |
| May 21, 2026 No. 5034210 77.1110 | $465 Received |
| May 20, 2026 No. 5034209 77.502 | $465 Received |
| May 20, 2026 No. 5034208 77.809 | $151 Received |
| May 20, 2026 No. 5033554 77.1607(p) | $245 Received |
| May 20, 2026 No. 5033553 77.404(a) | $193 Received |
| May 19, 2026 No. 5034207 77.1104 | $209 Received |
| May 19, 2026 No. 5034206 77.1109(a) | $818 Received |
| May 19, 2026 No. 5034205 77.208(d) | $245 Received |
| May 19, 2026 No. 5034204 77.1110 | $465 Received |
| May 19, 2026 No. 5033552 77.1104 | $209 Received |
| May 19, 2026 No. 5033551 77.408 | $245 Received |
| May 13, 2026 No. 5034203 77.410(c) | $165 Received |
| May 13, 2026 No. 5034202 77.410(c) | $165 Received |
| May 13, 2026 No. 5034201 77.1606(c) | $151 Received |
Latest inspections
Regular Safety and Health Inspection
Event F03EA02
Oct 1, 2026
Verbal Hazard Complaint Inspections
Event F010EEF
Aug 19, 2026 to Aug 25, 2026
Regular Safety and Health Inspection
Event F0065E2
Apr 22, 2026 to Jul 7, 2026
Verbal Hazard Complaint Inspections
Event F0065DC
Apr 7, 2026 to Apr 9, 2026
Compliance Follow-up Inspection
Event F009D9F
Mar 24, 2026 to Apr 1, 2026
Spot Inspection
Event F010EDC
Feb 4, 2026 to Feb 11, 2026
Verbal Hazard Complaint Inspections
Event F003301
Oct 23, 2025
Regular Safety and Health Inspection
Event F003300
Oct 1, 2025 to Nov 13, 2025
Regular Safety and Health Inspection
Event 6472768
Jun 17, 2025 to Sep 18, 2025
Regular Safety and Health Inspection
Event 6472553
Dec 18, 2024 to Mar 4, 2025
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About this record
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