DRILLING, EXCAVATION, LOADING, TRANSPORTATION, DUMPING, SPREADING and LEVELLING ETC., OF 417.790 LBCM OF IN-SITU OB (WHICH INCLUDES 2.269 LBCM OF TOP SOIL, 9.083 LBCM OF SUB SOIL, 374.127 LBCM OF HARD OB and 32.311 LBCM OF COAL), AND EXCAVATION OF 0.894 LCM OF LOOSE SAND WITH CONVENTIONAL EQUIPMENT AND ADDITIONAL WORKS VIZ., 1000 SHOVEL HOURS, 18,000 RMT OF DRILLING AT VENKATESH KHANI COAL MINE, KOTHAGUDEM AREA DURING A PERIOD OF 36 MONTHS.