Management continues to evaluate the potential impacts to the Company's 2012 cost guidance for the Thompson Creek Mine and 2012 production and cost guidance for the Endako Mine. Previously announced cash costs guidance as of May 3, 2012 for the Thompson Creek Mine is not being reaffirmed or updated hereby. Previously announced production and cash costs guidance as of May 3, 2012 for the Endako Mine is not being reaffirmed or updated hereby.About Thompson Creek Metals Company Inc. Thompson Creek Metals Company Inc. is a growing, diversified North American mining company. The Company produces molybdenum at its 100%-owned Thompson Creek Mine in Idaho and Langeloth Metallurgical Facility in Pennsylvania and its 75%-owned Endako Mine in northern British Columbia. The Company is also in the process of constructing the Mt. Milligan copper-gold mine in central British Columbia, which is expected to commence production in 2013. The Company's development projects include the Berg copper-molybdenum-silver property and the Davidson molybdenum property, both located in central British Columbia. Thompson Creek has approximately 1,100 employees. Its principal executive office is in Denver, Colorado and its Canadian administrative office is in Vancouver, British Columbia. More information is available at www.thompsoncreekmetals.com . Cautionary Note Regarding Forward-Looking Statements Certain statements in this news release are "forward-looking statements" within the meaning of the United States Private Securities Litigation Reform Act of 1995, Section 27A of the Securities Act of 1933, Section 21E of the Securities Exchange Act of 1934 and applicable Canadian securities legislation. These forward-looking statements generally are identified by the words "believe," "project," "expect," "anticipate," "estimate," "intend," "future," "plan," "may," "should," "will," "would," "will be," "will continue," "will likely result," and similar expressions. Our forward looking statements include statements with respect to: future financial or operating performance of Thompson Creek or its subsidiaries; future inventory, production, sales, cash costs and capital expenditures; future earnings and operating results; expected concentrate and recovery grades; 2012 operating goals; and 2012 molybdenum prices.