New Delhi, July 14 -- The Supreme Court on Monday upheld the Centre's methodology for calculating mining royalty, rejecting a challenge by Kirloskar Ferrous Industries Ltd to the existing formula on the ground that it results in "royalty on royalty" and imposes a cascading financial burden on mining leaseholders. A bench of justices JB Pardiwala and KV Viswanathan declined to strike down the provisions governing computation of the average sale price (ASP) of minerals, holding that the methodology adopted by the Union government is a fiscal and economic policy measure aimed at preventing tax evasion and is neither unconstitutional nor manifestly arbitrary. The ruling is expected to bring certainty to the mining sector by preserving the exist...