m.t.p.s. -1- mill plant -unit i- overhauling , load testing and certifying of lifting tools and movable trolleys -1 charges for complete overhauling, replacement of brake coil, brake shoe, push buttons, etc…, load testing and certifying of the 5t capacity electrical hoist including the cost of spares 2 charges for dismantling, overhauling assembling, load testing and certifying of 10 ton capacity mechanical chain pulley block 3 charges for dismantling and bring down the 7.5 ton capacity trolley above the mill to mill floor, overhauling including cleaning and checking the bearing and gears in the trolleys replacement of wornout parts such as gears and bearings and assembling back for free movement of 7.5 ton capacity overhead movable trolleys with beams above mill floor at 8 mtr level