An unplanned roof fall occurred in the #5 entry near the surface of the mine at survey spad number 7.
Chilton Deep Mine No.1 Coal
Chilton Deep Mine No.1 has $423K in proposed MSHA penalties and $0 outstanding across 21 contested dockets, plus health sampling and the full incident record.
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- Fatalities
- 0
- Total incidents
- 12
- Years on record
- 2022–2024
- Latest incident
- Feb 2024
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This rate is recorded citations divided by MSHA inspection hours, per 100 hours. It reflects inspection effort, not mine size or production.Chilton Deep Mine No.1 has $423K in proposed MSHA penalties and $0 outstanding across 21 contested dockets.
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Differences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.MSHA sampling at Chilton Deep Mine No.1 shows respirable coal dust averaging 0.35 mg/m3 (100% compliant) across 797 samples.
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A sample is a point in time compliance measurement, not an individual exposure history. These figures describe MSHA sampling records and do not establish causation or personal dose.ⓘ
Respirable coal dust and silica figures cover coal facilities. Dust compliance is measured against the current 1.5 mg/m3 standard; samples predating the 2014 standard are included, so compliance rates are a coarse historical signal.ⓘ
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.| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2024 Q2 | 18,231 | 15 | 2 | 822.8 |
| 2024 Q1 | 39,239 | 85 | 27 | 2166.2 |
| 2023 Q4 | 37,797 | 75 | 29 | 1984.3 |
| 2023 Q3 | 39,566 | 19 | 4 | 480.2 |
| 2023 Q2 | 42,595 | 63 | 20 | 1479.0 |
| 2023 Q1 | 36,479 | 66 | 18 | 1809.3 |
| 2022 Q4 | 31,690 | 51 | 11 | 1609.3 |
| 2022 Q3 | 32,252 | 37 | 9 | 1147.2 |
Show 3 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2022 Q2 | 32,785 | 66 | 19 | 2013.1 |
| 2022 Q1 | 15,966 | 16 | 6 | 1002.1 |
| 2021 Q4 | 42 | 0 | 0 | 0.0 |
Reportable incidents
12 on file2024 · 3 incidents
Injured Worker was in process of dismantling water line from roof of mine when the load of the water line on Injured Worker's shoulder was too heavy, causing Injured Worker to drop water line to ground and began feeling pain in stomach area.
An unplanned roof fall occurred at this mine located on the Southwest Mains, #2 Belt line between 25 and 26 break, approximately 10' inby SS#: 167. There were no injuries resulting from this fall.
2023 · 5 incidents
Employee was attempting to place a cable reel onto a pallet. Chain was placed around cable reel. Forklift operator was setting reel down onto pallet when employee decided to step closer and remove chain from fork of forklift. At that moment, the reel rolled over onto the side of the employee's left foot near the ankle.
Employee was diagnosed with occupational pneumoconiosis on 9/28/2023. During preparation for a PT 50 audit, it was discovered that this occupational illness was not reported to MSHA.
Employee stated that the employee was finishing a stopping that the day shift had started to build. Employee was up on a ladder when the stopping fell and struck the ladder, knocking employee down to the mine floor, where a piece of block struck employee on the left foot. Employee was diagnosed with a fractured bone in left foot.
Employee stated that EE and another employee were attempting to install a slide in a rock box when the metal they were moving slipped out of EE's hand and struck EE's knee against the side of the rock box.
A non-injury accident occurred at this mine in the form of an unplanned roof fall. the fall occurred in the #6 primary escapeway entry at #2 cross cut.
2022 · 4 incidents
Employee was lifting belt structure out of an insert when they felt pain in right knee. Employee was diagnosed with a sprain and placed off work. During preparation for a Pt. 50 Audit it was discovered that this incident was not reported to MSHA but was reported internally as an NFDL. This incident was counted as an NFDL on the 7000-2, submitted for the mine for Q4 2022.
Employee stated: was installing a rib bolt on the left side of the entry when employee's foot slipped off the platform. As employee was falling, employee tried to catch self and employee's right arm went between the mast cradle and the mast jack causing a fracture to right forearm.
Employee was rolling up ventilation curtain, at which time a piece of rock/coal fell out of the rib striking the employee in right foot area causing a fracture.
A non-injury roof fall accident occurred and was discovered at this mine. The roof fall was in #6 entry at break 4 (1cc inby spad 26). Primary Escapeway Intake. The roof fall is appox. 20' wide, 20' long and up to 8' high.
The full compliance file on Chilton Deep Mine No.1
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.