बारिश के मौसम में OPENCAST Mines को कैसे बचाया जाता है और कोयले का उत्पादन कैसे होता है | Khanan

#coalmining #opencastmines #khanan Coal mining in Rainy season VIDEO CREDIT : NCL ™ Copyright Disclaimer: Under Section 107 of the Copyright Act 1976, allowance is made for "fair use" for purposes such as criticism, comment, news reporting, teaching, scholarship and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favor of fair use.