Section 21 in The Granite Conservation And Development Rules, 1999
21. System of working.
(1)System of working in granite quarries in sheet rock shall be performed by formation of benches.(2)Such benches in granite and overburden including weathered granite shall be formed separately and the benches in overburden or weathered granite shall be kept sufficiently in advance so that their working does not interfere with the working of granite.
