DRILLING, EXCAVATION, LOADING, TRANSPORTATION, DUMPING, SPREADING & LEVELLING, ETC., OF 702.189 LBCM OF IN-SITU OB (WHICH INCLUDES 43.342 LBCM COAL) AND 3.306 LCM OF REHANDLING & SPREADING OF LOOSE TOPSOIL ON FINISHED EXTERNAL DUMPS WITH HIRED CONVENTIONAL EQUIPMENT AND ADDITIONAL WORKS, VIZ., 6,00,000 RMT OF DRILLING, 5,000 SHOVEL HOURS AND 5000 DOZER HOURS AT RAMAKRISHNAPUR OPENCAST PROJECT, MANDAMARRI AREA FOR A PERIOD OF 48 MONTHS.