# HOISTING
> MSHA accident `220092670048` · 09/02/2009 · Denison Mines (USA) Corp.
## Details
- **Degree of injury:** DYS AWY FRM WRK & RESTRCTD ACT
- **Classification:** HOISTING
- **Accident type:** Struck against a moving object
- **Occupation:** Laborer, Bull gang,  Parts runner, Roustabout, Roof trimmer/scaler
- **Activity:** Ride equipment
- **Injury source:** ELEVATORS,CAGES,SKIPS,ETC
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** BACK (MUSCLES/SPINE/S-CORD/TAILBONE)
- **Days lost:** 1
- **Mine experience:** 0.13 years
## Operator
- **Controller:** International Uranium Corp
- **Operator:** Denison Mines (USA) Corp.
- **Mine:** [4200470](https://api.ai-analytics.org/mine/4200470)
## Narrative

Hoistman had shut off the air to the clutch actuator piston to make adj. Miners rang for the cage, hoistman forgot to reopen the valve, which left the clutch disengaged. Hoistman lowered the cage, it started to free fall. He then slammed on the brake causing the cage to stop suddenly. Injuring 1 of the miners. The miner that was injured has a lumbar disc herniation.

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*Source: [MSHA Open Government Data](https://arlweb.msha.gov/OpenGovernmentData/) · AI Analytics · CC0 1.0*