bids are invited for custom bid for services - sweeping cleaning picking of garbage coal dust grit scrap from store pd section cycle stand compressor room shed floor yards railway track pathway between tracks road and associated area and disposal at nominated place as pe.. , custom bid for services - sweeping cleaning mopping of office rooms labs canteen toilets urinals wash basins with adequate disinfectant and cleaning agent as per scope of work , custom bid for services - collection of mixed scrap released material from shed yard of wccdry and segregation of mixed materials and stacking item wise for lot formation at nominated place as per scope of work