A professional who tends pneumatic chipping machine to split rough slabs of stone. Responsibilities include:

• Marks dimensions on stone, according to specifications, using rule and chalk.
• Lifts guide track onto stone and aligns track with marks on stone.
• Positions wagon over track, inserts chisel in chuck of airhammer, mounts airhammer on wagon, and lowers chisel into opening in guide track.
• Presses lever to start airhammer and pushes wagon and airhammer back and forth over guide track to split stone.