Section 67(1) in Maharashtra Factories Rules, 1963
(1)The breaking, cutting, dressing or carving of bricks, stone, concrete, slag of similar materials by means of a hammer, a chisel, pick or similar hand tool, or by means of a portable tool driven by mechanical powers, and they dry grinding of surfaces of any such materials by means of a wheel or disc driven by mechanical powers, where in any of the foregoing cases particles or fragments are liable to be thrown off towards the operator in the course of the process.
