OCI RESOURCES COMPLETES SALE TO CINER GROUP

October 27, 2015

OCI Chemical Corporation has issued a press release, information below, announcing that Ciner Group has completed its purchase of OCI and certain OCI producing affiliates. While OCI will be changing its name, its Atlanta, Georgia USA based management team and Green River Wyoming USA based operations team remains unchanged as does OCI’s membership in ANSAC which, effective in early November, will continue under the name Ciner Resources Corporation. ANSAC will continue to draw on Ciner Resources’ Wyoming-produced sodas ash as one of its several sources of high quality soda ash supply, and ANSAC anticipates the acquisition will have no effect on our ongoing operations and competitive supply of high quality natural soda ash to our valued overseas customers.

Ciner Group is a privately held Turkish based company founded in 1978 and has three clusters of subsidiaries, Ciner Energy and Mining Group, Ciner Media Group, and Ciner Commerce, Industry and Service Group. Ciner Resources’ Corporation will fall under Ciner Energy and Mining Group.

For more information on Ciner Group, please goto: www.cinergroup.com.tr

PRESS RELEASE

OCI Enterprises Inc., the North American subsidiary of OCI Company Ltd. (“OCI”) of Seoul, Korea, today announced it has completed the previously-announced sale of its approximately 73% limited partner interest in OCI Resources LP (NYSE: OCIR) (“OCI Resources” or the “Partnership”), as well as its 2% general partner interest and related incentive distribution rights, to Ciner Enterprises Inc., an affiliate of Ciner Group of Istanbul, Turkey, for a total consideration amount of approximately $430 million. Additional details regarding the transaction can be found in a presentation available on the Partnership’s website at: http://ociresources.com/files/OCIR-Investor-Presentation-Ciner-Slides.pdf.

In connection with the closing of the transaction, the Partnership will change its name to Ciner Resources LP, with such name change expected to be effective on November 5, 2015, and the publicly traded units of the Partnership are expected to begin trading the following day (November 6, 2015) after the open of market trading on the New York Stock Exchange under a new ticker symbol – CINR.

OCI Resources will continue to operate as a publicly traded Master Limited Partnership with the current management team remaining with the Partnership. The transaction does not involve the sale or purchase of any OCI Resources common units held by the public.

In connection with these changes, the general partner of the Partnership will also change its name to Ciner Resource Partners LLC and OCI Wyoming LLC (“OCI Wyoming”) will change its name to Ciner Wyoming LLC, with such name changes expected to be effective on November 5, 2015.

OCI Resources owns a controlling interest comprised of a 51% membership interest in OCI Wyoming, one of the largest and lowest-cost producers of natural soda ash in the world. Ciner Group, through its subsidiary, Eti Soda, operates a natural soda ash production facility in the world’s second largest trona ore bed located in Beypazari, Turkey.

“Ciner Group has been expanding their position in the global soda ash market and we are excited about this partnership and how it could expedite the cash flow growth of OCI Resources,” said OCI Resources President and CEO Kirk Milling.

“Ciner Group is pleased to welcome OCI Resources to our family of companies. With its position in markets that are complementary to ours, OCI Resources brings solid operational and financial performance as well as industry-leading safety performance,” said Turgay Ciner, Chairman, Ciner Group.

Citi acted as financial advisor, Dechert LLP served as legal advisor to OCI Enterprises Inc. and White & Case LLP served as legal advisor to Ciner Group with the assistance of Regnum Solicitors acting as inhouse legal advisor to Ciner Group.

Full Press Release