Apollo Global Management, Inc. (NYSE:APO) is believed to be in talks with CIMIC Group Limited (ASX:CIM) about a potential acquisition of its Thiess Pty Ltd, which some estimate could be worth more than $3 billion. JPMorgan is working on a sale of the world's largest mining services provider at a time when the industry is consolidating and many large companies are looking to sell their mining services operations. Other companies that could also be examining the business are The Blackstone Group Inc. (NYSE:BX) and Sigdo Koppers S.A. (SNSE:SK).