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NMD (Panels 12 -Right through 16- Right, PR 99 -05)
<br /> TCC will continue to mine the reserves it controls in the Twentymile Park Basin. The mine moved operations into
<br /> • the NMD as shown on Map 23, Mine Plan Map. TCC controls all of the coal required to mine in this area. TCC
<br /> projects annual coal production at up to10 million tons per year.
<br /> TCC uses the longwall mining method as the primary technique for assuring maximum recovery of the resource. In
<br /> the NMD, plans call for a 1,000 -foot wide face, with panel lengths ranging from approximately 13,600 to 17,000
<br /> feet. The gate- roads, main and sub -mains will be developed by continuous miner, as is the current practice.
<br /> NMD (14 - Right Gate - road Alternate Location, MR 01 - 171)
<br /> TCC evaluated whether or not the 1,000 -foot wide face could be increased to approximately 1,200 feet or wider. In
<br /> general, the outcome of the evaluation limited the face width to something less than 1,200 feet. In order to
<br /> accommodate the uncertainty associated with this evaluation, and initiate the start of the gate -road, an area is shown
<br /> in red on Map 23 and 23 B for potential areas in which the 14 Right Gate -road will be started.
<br /> NMD (Panels 17 - Right through 21 Right, PR03 - 06)
<br /> The mine continues its operation into the NMD as shown on Map 23, Mine Plan Map. TCC has projected annual
<br /> coal production to increase from the current levels to a maximum of approximately 12 million tons per year.
<br /> TCC uses the longwall mining method as the primary technique for assuring maximum recovery of the resource. In
<br /> Panels 17- through 21- Right, mining continued in the NMD during this permit term with a 1,000 -foot wide panel
<br /> and panel lengths ranging from approximately 10,900 to 15,700 feet. The gate- roads, main and sub -mains were
<br /> developed by continuous miner, as is the current practice.
<br /> • NMD (Panels 21 - Right through 24 - Right (24 - Right Partial), PR06 - 07)
<br /> The mine will continue its operations to the geologic /economic limits of the NMD as shown on Map 23, Mine Plan
<br /> Map. TCC projects ongoing annual coal production of up to approximately 12 million tons per year.
<br /> TCC uses the longwall mining method as the primary technique for assuring maximum recovery of the resource. In
<br /> Panels 21- through 24- Right, mining will continue in the NMD during this permit term with a 1,000 -foot wide
<br /> panel and panel lengths ranging from approximately 9,500 to 15,700 feet. The gate- roads, main and sub -mains will
<br /> be developed by continuous miner, as is current practice.
<br /> WESTERN MINING DISTRICT (WMD)
<br /> WMD (Panels 12- through 20 -Left, and 13- and 14 -Left Inby, PR06 -07, PR09 -08, TR07 -63, TR08 -64, TR09-
<br /> 68, TR09 -71)
<br /> TCC will continue to mine the reserves it controls in the Twentymile Park Basin. Preliminary (Phase I)
<br /> development of the WMD was initiated under PR06 -07 and TR07 -63 to facilitate extension of mine ventilation and
<br /> support facilities for both the northern portion of the NMD, and the new WMD into the Northern Mining District as
<br /> shown on Map 23, Mine Plan Map. TCC controls all of the coal required to mine in these areas. TCC projects
<br /> annual coal production at up to 12 million tons per year. In preparation for future mining in the WMD, TCC has
<br /> proceeded with initial (Phase 1) Phase II, and Interim Phase III development of the main and sub -main entries for
<br /> Panels 13 -Left through 17 -Left, as shown on the Mine Plan Map, Map 23. Phase I through Interim Phase III
<br /> development will result in extension of development in the 18 -, and 17 -Left gate -roads to their furthest western
<br /> limit, partial development of the 16 -, 15 -, 14, and 13 -Left gate- roads, and full development of the 9- and 10 -North
<br /> • Mains. Development of the 18 -, and 17 -Left gate -roads will extend into the new Federal coal lease (COC- 72980)
<br /> at the western edge of the WMD. Full development and longwall mining under PR09 -08 will extend development
<br /> TR09 -71 2.05 -2.1 11/18/09
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