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Summary <br /> 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 I I I 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 makeup 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 /> RN7, available in DRMS's document management system previously referenced. This findings <br /> document replaces Trapper Mine's previous findings document associated with Permit Renewal RN7 <br /> and Midterm Review MT8. Please note that much of the information in this document is derived <br /> 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 2020. <br /> Minor Revisions (MR) <br /> Submittal Proposed Decision Permitting Action <br /> Date(s) <br /> NM25 8 June 2020 Groundwater Monitor Wells in the I/J Pits <br /> MR226 16 October 2020 No Name West Diversion and I Pit Preparation <br /> 3 <br />