REPORTABLE DUE TO SUTURES/DAMAGE TO PERMANENT TEETH: Employee was operating the roof bolter c/n RB130 on #8 Section when the drill steel started clogging up. When EE hit the drill steel with the bolt wrench, the wrench bounced back and struck EE in the mouth causing lacerations to EE's lower lip/chin which required sutures and a dental injury to EE's top front teeth.