An employee drove a forklift equipped with a tilt-hopper over to a roll-off dumpster to dump concrete and dirt from a demolition project. The employee got off the forklift and released the lever on the tilt-hopper. The employee's left hand got caught between the tilt-hopper and the roll-off dumpster resulting in a partial amputation to the middle finger and loss of skin from the pad of the ring finger.