Wolfgang Reitzle, who will be chairman of the new merged entity LafargeHolcim, attends a news conference in Paris, April 7, 2014. Switzerland's Holcim unveiled an all-share deal to buy France's Lafarge on Monday to create the world's biggest cement maker with combined sales of 32 billion euros ($44 billion). The partners billed the deal as a merger of equals under which Lafarge shareholders will receive one Holcim share for every Lafarge share held, with the combined group to be based in Switzerland and listed in Zurich and Paris. REUTERS/Christian Hartmann (FRANCE - Tags: BUSINESS CONSTRUCTION)