In a very tragic incident, four workers were killed in Singareni Collieries in Peddapalli in Telangana. A roof collapsed in an underground mine in Peddapalli. Workers are extracting coal at the mine Ramagundam RG-3 as a part of the Adriyala Longwall project. After knowing the news, the officials rushed to the spot. Rescue operations are going on. According to the reports, from