Builders FirstSource - - Responsibilities: Physically handles materials to ensure movement of items is optimized; lifts, carries, and stacks as needed.; Operates motorized and non-motorized material handling equipment, some requiring specialized training.; Responds attentively to training from foreman or more senior handlers to increase knowledge of work processes.; Understands and observes all safety procedures and practices to prevent injury; attends periodic safety meetings; may recommend changes to improve safety procedures.; Other duties may be assigned.