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Utah International Inc. began exploration drilling operations for Trapper Mine in 1954 to obtain <br />geologic information on the structure of coalbeds and estimates of mineable coal reserves. In 1973, <br />Utah International Inc. and four electric utilities signed a contract for delivery of coal to fuel the Craig <br />Generating Station. This coal delivery obligation of approximately 111 million tons over a 52 year <br />period required strip mining six to seven thousand acres of land since the mining activities began in <br />1976. <br />Environmental studies for the Trapper Mine began in 1972 and intensified in 1973 and 1974. Most <br />of those studies will continue throughout the life of the project. Trapper Mine endeavors to reclaim <br />disturbed lands to as good as or better condition than before mining. A high priority is attached to <br />the reclamation programs, all of which are designed to protect wildlife, water, air quality and other <br />environmental resources of the mine area. <br />The shop and warehouse buildings were completed in November 1975, while the office complex was <br />completed in November of 1976. The construction of the first of three, 30 cubic yard walking draglines <br />started in February 1976. <br />Actual mining operations began in May, 1977, and coal deliveries started in August 1978. <br />The original owner of Trapper Mine was Utah International, Inc. (Utah), an international mining <br />company. All initial permitting and mining efforts were performed by Utah International. In July <br />1982, Utah International formed the subsidiary, Trapper Mining Inc. to consolidate and hold the <br />properties and rights that make up Trapper Mine. The owners of the Craig Generating Station, the <br />electric utility receiving its coal from Trapper Mine, purchased Trapper Mining Inc. in July of 1983. <br />For additional information about the history of the permit application, please see Permit Renewal <br />RN6, available in DRMS's document management system previously referenced. <br />This findings document replaces Trapper Mine's previous findings document associated with Permit <br />Renewal RN6 and Midterm Review MT6. Please note that much of the information in this document <br />is derived from those previous documents. <br />The Review Process: Permit History and Revisions <br />The following revisions have been submitted since the last midterm review dated June 2015. <br />Minor Revisions (MR) <br />Submittal <br />Proposed Decision <br />Date(s) <br />Permitting Action <br />MR222 <br />9 Oct. 2015 <br />AVS Update Information. <br />MR223 <br />30 Nov. 2016 <br />Monitor Well 95-LW9 <br />Page 3 <br />Trapper RN7 Prepared by: R. Reilley <br />Nov 2017 <br />