Explanation:

Cement Corporation of India Limited (CCI) is a public-sector undertaking of the government of India. The company was incorporated as a wholly government-owned corporation on 18 January 1965, with the objective of setting up cement units in public sector to help achieve self-sufficiency in cement production in the country.CCI is based in New Delhi. The corporation manufactures various types of cements, such as Portland pozzolana cement (PPC), Portland slag cement (PSC), and ordinary Portland cement (OPC) of varying grades - 33, 43,53 and 53S (special grade cement for manufacture of sleepers for Indian Railways).

CCI currently has 10 operating units spread over seven Indian states and union territories, with a total annual installed capacity of 38.48 lakh MT.The units are spread throughout the country from East (Bokajan in Assam) to West (Akaltara, Mandhar in Chhattisgarh and Nayagaon in Madhya Pradesh) and from North (Rajban in Himachal Pradesh and Charkhi Dadri in Haryana(semi dry process)) to South (Kurkunta in Karnataka and Adilabad, Tandur in Telangana), with one cement grinding unit in Delhi.