Mitra S. K.- A PREMIER ISO 9001: 2000 COMPANY, NABL ACCREDITED, EXPORT INSPECTION COUNCIL (EIC) , POLLUTION CONTROL BOARD RECOGNISED ORGANISATION ENGAGED IN INSPECTION, SAMPLING, TESTING, SURVEY FOR MINERALS, ORES, COAL, COKE, FERROALLOYS, FERTILIZER ETC. ENVIRONMENTAL TESTING, POLLUTION MONITORING, WATER TESTING SERVICES CONSULTANCY