An employee was cleaning the deck and noticed a 10' piece of angle iron in the way. The employee attempted to move the angle iron when the left side of it became wedged between concrete and a metal support. The employee was standing next to an I-beam support structure. As the employee tried to move the angle iron back and forth, he slammed his right hand between the angle iron and the I-beam, pinching his right pinky finger and amputating the fingertip.