Employees found the fall as they were entering into the mine at main 8 face out by. The fall area was approximately 40' long, 40' wide. MSHA was notified within 15 minutes of the fall being discovered. The 103 (k) order was modified by MSHA.
BISON MINEMetal/Nonmetal
- Fatalities
- 0
- Total incidents
- 9
- Years on record
- 2015–2024
- Latest incident
- Jul 2024
Reportable incidents
9 on file2024 · 3 incidents
A roof fall occurred in 1R2 between crosscuts 7 and 8. The area was approximately 40'x 40'. MSHA was notified within 15 minutes of the fall occurring and the prior 103 (K) order was expanded.
Foreman was conducting workplace examination of the mine and discovered a roof fall at the intersection of 1R4 and 1RC10.The fall area is approximately 40' long, 35' wide, and 12' high. MSHA was notified within 15 minutes of the fall being discovered. A 103 (k) order was issued by MSHA.
2022 · 1 incident
Employee was standing inby the roof bolter in Entry 1R6 looking for loose material to hand scale. A piece of stone, approximately 2'x2'x3"" fell and hit the employee in the hard hat and right shoulder. EE received a shoulder contusion.
2021 · 2 incidents
While changing steels on the roof bolter, the steel slipped from the employee's hand. It struck EE on the top of EE's left foot behind the steel toed portion of EE's boot. EE was diagnosed with a fracture of the 4th metatarsal bone.
Employee was installing a 7' roof bolt when EE felt a pain in the arm. EE was diagnosed with a left rotator cuff tear.
2019 · 1 incident
Foreman was conducting workplace examination of the mine. Foreman saw the roof fall when foreman entered into Main 10 from Main 9. The roof fall is in by of crosscut 10. The exact date of the roof fall is unknown because the mine was unoccupied on 12/14/2019 and 12/15/2019. MSHA was notified within 15 minutes of the fall being discovered.
2017 · 1 incident
Injured was installing tail pulley guard on the dump belt under the crusher. As they were trying to position the guard, employee suffered low back strain.
2015 · 1 incident
Employee slipped while exiting a drill during a rainstorm. Employee bruised chest and was in pain the next morning.