nctps ii - m i circle mill plant maintenance unit-i removal of mill rejects/chocked coal from hopper and from mill areas by loading, weighing in department weigh bridge and unloading the mill rejects/coal at reject yard/coal yard by transporting in tractor for the period of 180 days from the date of handing over the site to the contractor or till completion of quantity whichever is earlier on tonnage basis for 5500 mt. .