DRILLING, EXCAVATION, LOADING, TRANSPORTATION, DUMPING, SPREADING AND LEVELLING, ETC., OF 958.370 LBCM OF IN-SITU OB (WHICH INCLUDES 2.440 LBCM OF TOP SOIL, 4.880 LBCM OF SUB SOIL, 869.900 LBCM OF HARD OB AND 81.150 LBCM OF COAL) WITH CONVENTIONAL EQUIPMENT AND ADDITIONAL WORKS VIZ., 4,000 SHOVEL HOURS, 4,000 DOZER HOURS AND 1,00,000 RMT OF DRILLING AT RG OC-III EXPANSION MINE, RG-II AREA, DURING A PERIOD OF 48 MONTHS.