Etch designs or lettering into metal, glass, or ceramics by laser or hand.
Tends granulator machine that expands blast-furnace slag for use as building or insulating material: Signals OVERHEAD CRANE OPERATOR 921.663-010 to position iron runners that carry slag from furnace to granulator machine. Opens gate of furnace to allow slag from furnace to flow onto runners, and turns water, air, and steam valves to spray slag in granulator. Positions container under discharge chute of granulator to receive expanded slag, using car puller. Starts conveyor that carries expanded slag from granulator to discharge chute. Stops equipment and clears slag from runners, granulator, and conveyor, using iron bar. Lubricates equipment, using grease gun and oilcan.