Wind and splice wires at different lengths for different jobs.
Tends stationary pump in pneumatic conveyor system that conveys fine-ground raw materials or finished cement from one bin to another preparatory to further processing: Pushes levers to start pump, air compressor, and other conveying equipment. Observes pressure dials on pump that indicate operating condition of conveyor. Makes minor repairs to pump to correct faulty operation. Oils and greases equipment. May pump bulk cement from unloading bins into tank trucks, railroad cars, and boats [CEMENT LOADER]. May tend mobile pump.