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FIGURE 16-4 ~ itLP1,Y RLFE1! :'o- United States Department of the Interior 3530 7-T61 .BUREAU OF LAND biA_'~'AGEMENT GRA.'tiD TUYCTIOY D[52?,iCT ?61 HORIZO\ DRIVE GP.AIJD 1L'::CTIOY, COLOR.~DO 81501 Mr. Arthur Tormsend March 26, 1982 SH PO Colorado Heritage Center 1300 Broadway Denver, CO 80203 Dear t•1r. Townsend; Powderhorn Coal Company has submitted a mine plan permit application to the Colorado Mined Land Reclamation Board for Fe deraT Coal Leases C-01538, C-078049, C-02740, C-024998, and C-029889. (See Appendix I far the legal location of the lease areas.) Underground coal mining operations in and adjacent to the lease areas began in 1899 and have run continuously to the present. According to the current mining plan, no additional surface lands will be affiected .,,. • during the life of the permit. All coal will be mined through the existing surface facilities of the Roadside and Cameo hlines. There is a possibility, however, far the occurrence of subsidence in areas where underground mining rrill take place. Several cultural resource inventories have been conducted within the lease areas. They include: "An Archaeological Clearance of BLM Lands for the Cambridge dining Company" (Conner 1975); "Antiquities Inventory for Cambridge toning Company: Coal Mine Portal and Area for Coal Mine Debris Disposed in Coal Canyon and Coal Gulch, Cameo, Colorado" ('rlignall and Conner 1977); and portions of an inventory entitled "Final Report of an Archaeological Survey of the West Central Colorado Coai Leases" (Hibbets et al 1979). All total, over i0A of the lands in the lease areas have been inventoried for cultural resources at a class III level. Copies of the Conner reports are contained in Appendix II. A copy.of the Hibbets report, including site forms, is available at the Colorado Preservation Office. No sites were identified in the areas inventoried by Conner and Wignall and Conner. A total of 28 sites and 38 iswiated finds mere identified by Hibbets in coal ceases C-029889 and C-024998. All sites identified by Hibbets are located in Transect 7. This transect was recommended in the,Hibbets report to be considered for nomination to • the FJational Register of Historic Places as an archaeological district. Enclosed is the unsuitability report for coal leases C-0153.°., C-078049, C-02074C, C-024998, and C-029889, which is the formal application of unsuitability criterion 7 as is required under 43 CFR 34ti1.',.