EE was cleaning a chute that is part of a Crusher with Trommel screen. EE did not Lockout/Tagout/Try before removing the guard to the chute. While cleaning the chute the bar EE used bounced back at EE, causing EE to let go with EE's right hand. Hand came in contact with rotating trommel, taking off EE's impact glove and causing a laceration of EE's right-hand middle fingertip