supply and installation of ring compost units , supplyand installation of ring compost , ferro / cement ring of internal diameter 0.7 m, thickness 2.5 cm and height 0.5 m placed over a circular ferro cement slab of dia 0.75m and thickness 2.5 cm. the ring will have a hole of dia 2.5cm at the bottom for the leachate to flow outcircular ferro / cement cover slab of 0.75 m diameter and 2.5 cm thick with central circular hole of 0.30 m diameter to cover the ring, a lid which can be removed and refitted back for loading the waste into the ring and closing it tightly after loading the waste.two sets of circular ferro - cement rings resting on circular ferro - cement slabs and covered by another circular ferro - cement slab with provision for loading the waste from the top, base layer with cowdung ( ~5 kg ) powder , surgical hand gloves for handling the waste & manureunit cost –