Wolfram Ore

Wolfram ore, 'wolfram ore' when detached and taken out from the rock in which it is embedded either by crushing the rock and sorting out pieces of wolfram or by washing or magnetic separation and other similar and necessary process it becomes a concentrate but does not cease to be ore. Unless the ore is roasted or treated with any chemical it cannot be classed as processed, Minerals and Metals Trading Corporation of India Ltd. v. Union of India, AIR 1972 SC 2551 (2554): (1972) 2 SCC 620: (1973) 1 SCR 997