bids are invited for custom bid for services - preparation of leaching batches by collecting spent water and charging of reduced ore acid lime and other raw material quantity 3380 nos , custom bid for services - filter cloth washing and equipment up keeping with proper housekeeping of the section quantity 1130 nos , custom bid for services - cleaning and washing of leaching vessels and other tank quantity 162 nos , custom bid for services - sludge removal from every filter presses filter press hopper pit and below leaching vessel and transportation by providing vehicle to site 2 kms away and stacking as directed quantity 5460 cubic meter , custom bid for services - recovery of reduced ore at emd plant quantity 30 mt , custom bid for services - maintenance up keeping of effluent treatment plant at emd plant quantity 1300 cubic meter