A professional who operates drill to bore holes in blocks or slabs of granite, slate, marble, or sandstone, according to specifications. Responsibilities include:

• Places block of stone on machine bed and secures it in position for drilling, using electric hoist, wedges, and wooden blocks.
• Measures and marks block for drilling, using rule or template and marking pencil.
• Selects and installs specified bit in drill and starts machine.
• Pulls lever and turns wheels to regulate speed of machine, flow of water (coolant), and drilling speed.
• May drill holes in stone, using pneumatic hand drill.
• May sharpen drill bits, using grindstone.
• May be designated according to type of machine operated as pneumatic drill operator; radial-drill operator; or according to material drilled as slate cutter.