On a firm that makes “christmas trees,” a nickname for a part of an oil rig. Arm of vehicle removes glowing hot steel cylinder from the oven and drives to die; places in mold. Technician moves gears, making machine part push down on steel. The mold separates, releasing the steel into a claw that transports it through doorways to a different room. Worker watches a cooled part go through some kind of burnishing machine. Two men assemble the “tree,” tightening its giant washers. Shot of oil rig. Shot on the deck of a man winching something.