Section 17(5) in The Mineral Conservation And Development Rules, 1988
(5)In case of a doubt as to the optimum ore/mineral recovery under sub-rule (1), or the method of underground development under sub-rule (2), or size of openings, blocks or pillars under sub-rule (3) or the stopping practices under sub-rule (4), it shall be referred to the Chief Controller of Mines for decision.
