A professional who operates bridge-like track-mounted machine equipped with horizontally mounted cast iron grinding wheel to level surface of dimension stone used for building purposes and in manufacture of monuments. Responsibilities include:

• Turns valve to start and adjust flow of water and abrasive over stone and grinding wheel.
• Climbs into cab of machine or onto control platform and moves levers to guide abrasive wheel over stone, observing level gauge to detect uneven areas.
• Observes ammeter to determine resistance against grinding wheel and moves levers or pushes buttons to adjust pressure of wheel against stone and control speed of wheel.
• May operate machine that oscillates rotating grinding wheel as it traverses slab, using successively finer abrasives to grind and buff stone to mirror-like finish and be designated slab polisher.
• May operate machine equipped with cast iron wheel set with diamond-impregnated polishing bars to grind (sand) and polish sandstone and be designated diamond sander.