Section 70(2)(c) in Gujarat Minor Mineral Concession Rules, 2017
(c)Wherever possible, the waste rock or overburden or other rejects shall be used for back filling the worked out quarry or mine where the mineral has been recovered up to the optimum depth, with a view to restore the land to its original use or desired alternate use. Where the backfilling is not feasible, the waste dumps shall be scientifically vegetated by suitable native species to prevent erosion and surface run off; and