DRILLING, EXCAVATION, LOADING, TRANSPORTATION, DUMPING, SPREADING & LEVELLING ETC., OF 313.933 LBCM OF IN-SITU OVERBURDEN (WHICH INCLUDES 8.220 LBCM OF TOP SOIL, 57.545 LBCM OF SUB SOIL, 185.439 LBCM OF HARD OB & 62.729 LBCM OF COAL) AND EXCAVATION OF 6.467 LBCM OF TOP SOIL FROM EXTERNAL DUMP AREA WITH CONVENTIONAL EQUIPMENT AND ADDITIONAL WORKS VIZ., 3500 SHOVEL HOURS, 1500 DOZER HOURS, 3500 LOADER HOURS & 20000 RMT DRILLING, PUMPING OF WATER FROM QUARRY AND ILLUMINATION OF MINE WORKINGS AT NAINI OPENCAST PROJECT, NAINI AREA, ODISHA STATE DURING A PERIOD OF 24 MONTHS.