period of twenty years from the date of original grant effective from 18.12.2013 valid up till 17.12.2033 in terms of recent amendment to section 5(2) of karnataka regulation of stone crusher amendment act, 2020 w.e.f. 30.03.2020, pursuant to a renewal application dated: 03.09.2018 and representation dated: 13.06.2020 filed …