A rescue operation involving the Indian Army, Assam Rifles, NDRF, SDRF, and other agencies resumed on Wednesday morning to save nine individuals trapped in a flooded coal mine since Monday in Umrangso, Assam. The flooding, linked to an underground water channel, left water levels inside the mine at approximately 100 ft.A rescue operation involving the Indian Army, Assam Rifles, NDRF, SDRF, and other agencies resumed on Wednesday morning to save nine individuals trapped in a flooded coal mine since Monday in Umrangso, Assam. The flooding, linked to an underground water channel, left water levels inside the mine at approximately 100 ft.