Over-exertion (Not Elsewhere Classified)
Miner parked a D9 Dozer and was climbing down to end shift. Miner's foot slipped and Miner was able to catch self on handrails. Miner had 3 points of contact during exit. Surface of step was slippery due to wet weather. Miner strained right shoulder, no lost work days. Miner is able to work Miner's normal duties with Miner's work restrictions.