At Ostrander portable EE was using 25-30 lb spud bar to dislodge buildup between conveyers when the bar struck a rock awkwardly. Spud bar continued forward and EE's hand went into the conveyor and crushed/pinched L pinky. EE was not wearing gloves and first aid was performed. EE was given stitches and antibiotics at hospital and diagnosed with tip/nail of left pinky tuft fracture.