Directorate General of Supplies and Disposals (Inspection Wing) (Ministry of Works, Hous- ... 2.2 The gravel for use as pack shall be free from impurities, such as shale, mica, felspar, clay, sand, dirt, loam, haematite and organic materials. ... Nampally Station Road, HYDERABAD 500001 E-52, Chitaranjan Marg, C-Scheme, JAIPUR 302001 117/418 B ...Web