An affiliate of Lafarge Africa has completed a 100 percent acquisition of Nigeria's third-largest cement manufacturer United Cement Company of Nigeria (UNICEM), the local unit of the French cement maker said on October 05. Lafarge did not disclose the purchase price. It said its affiliate Nigerian Cement Holdings (NCH), owned a 70 percent equity in UNICEM before agreeing a deal last November to buy the remaining 30 percent stake from Flour Mills.