DRILLING, EXCAVATION, LOADING, TRANSPORTATION, DUMPING, SPREADING & LEVELLING ETC., OF 425.25 LBCM OF IN-SITU OB (WHICH INCLUDES 3.58 LBCM OF TOP SOIL, 413.79 LBCM OF HARD OB & 7.88 LBCM OF COAL) AND EXCAVATION OF 3.00 LBCM OF TOP SOIL BENEATH EXTERNAL DUMP WITH CONVENTIONAL EQUIPMENT AND ADDITIONAL WORKS VIZ., 1000 SHOVEL HOURS, 1000 DOZER HOURS & 5,000 RMT OF DRILLING AT RG OC-II EXTENSION PROJECT, RG-III AREA DURING A PERIOD OF 24 MONTHS.