Purbanchal Cement Ltd (Maithon group) is planning to expand its cement plant in village Sauratari in Sonapur Tehsil in Kamrup district of Assam. The project involves expanding cement unit from cement capacity 500 tpd to 1100 tpd, clinker capacity from 400 tpd to 700 tpd. Land required for the project is 17.56 acre. The total project cost is estimated at Rs. 265.1 million. It will use Limestone (910 TPD), clay / shale (190 TPD), Iron dust (15 TPD), clinker (100 TPD), gypsum (22 TPD), fly ash (277 TPD), coal (140 TPD) and slag as raw materials.