Code 3042 applies to employers engaged in manufacturing passenger elevators, escalators, freight or construction elevators, moveable passenger walkways, and industrial elevator lifts.  In addition, this classification also includes manufacturing of parts used for repairing or modernizing existing elevators as well as manufacturing escalator treads and drives.   

In the shop, materials such as sheet steel, cast iron and sheet aluminum are cut to size according to specifications.  There may be some foundry work performed to prepare parts for subsequent machining.  The machinery or equipment used in the manufacturing process may consist of punch presses, boring mills, grinders, drill presses, shears, welding equipment, saws, planers, coil winders, foundry equipment and spray-painting equipment.