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Powertech Mining Pvt. Ltd.. the outskirts of Asansol City in West Bengal which is about 200KM from Kolkata. . In the year 2002, Power Tech started Liaisoning and distributorship business . Power Tech rechristened itself and came to be known as Power Tech Mining.mining companies in kolkatacalcutta,S & T MiningIncorporated on September 18, 2008 and headquartered at Kolkata, S&T Mining Company Pvt. Ltd. more. +. Notice of 10th AGM ». The main business interest.SRK's New Office in Kolkata | Geology | SRK Consulting NewsSubrato Ghosh is managing SRK's office in Kolkata, India. . involved with a major study of Hindustan Copper's existing mines and operations and with detailed.

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mining companies in kolkatacalcutta