coal transportation transportation of coal by mechanical means from heap no . 13 a , 13 b , 14b of nakc to slg siding via maheshpur silo including allied jobs in govindpur area , transportation of coal by mechanical means from heap no . 13 a , 13 b , 14b of nakc to slg siding via maheshpur silo including allied jobs in govindpur area . lead slab of 20-21 km . , loading of coal by contractors pay-loader into contractrors tipping trucks at stocklpile ( surface stock yards/ quarry bedstock/ face ) , loading of coal into railway wagons by contractors pay loaders at railway siding including levelling of wagons , cleaning of track etc . as per instruction of engineer in-charge . , total impact of gst for the purpose of ctc