A man lubricating a machine. He uses a foot pump, and his shirt sleeve becomes tangled in the machine. A man cutting sheets of gypsum with a machine. A red safety shield appears on the machine. A man walks through a delivery area strewn with material. He trips, and sees a piece of wood protruding from the floor. He hammers it down. A man pulls a sharp shard from the floor with a hammer. Someone snips off sharp material protruding from the floor. A hole in the ground is covered by a metal sheet. A man drives a forklift carrying sheets of gypsum. Bags moving on a conveyor belt. A wheel moving over someone’s foot. A person with a plastered foot walking on crutches.