DRILLING, EXCAVATION, LOADING, TRANSPORTATION, DUMPING, SPREADING & LEVELLING ETC., OF 652.97 LBCM OF IN-SITU OB (WHICH INCLUDES 642.11 LBCM HARD OB AND 10.86 LBCM COAL) AND RE-HANDLING OF 1.40 LCM LOOSE TOP SOIL WITH CONVENTIONAL EQUIPMENT AND ADDITIONAL WORKS VIZ., 2000 SHOVEL HOURS, 2000 DOZER HOURS & 10,000 RMT DRILLING AT RG OC-II EXTENSION PROJECT, RG-III AREA DURING A PERIOD OF 36 MONTHS.