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i <br /> INTRODUCTION <br /> Throughout this century, the mountains and foothills of southern <br /> Colorado have yielded the raw materials for the production of steel products <br /> by the CF&I Steel Corporation. Procurring these materials has created areas <br /> of disturbance related to the mining operations , and until recently these <br /> disturbed areas were revegetated only through natural succession. This <br /> study examines revegetation techniques on the waste material present at <br /> three mines operated by CF&I Steel Corporation. <br /> The Allen Mine, near Trinidad, is active in the deep mining of coal . <br /> f Studies were established there in 1976 on coal slack dumps in the Purgatoire <br /> i River Valley. The Canon City Dolomite Quarry, near Canon City, and the <br /> Monarch Limestone Quarry at Garfield, are both active in the quarrying of <br /> blast furnace fluxstones. At both locations, study plots were established <br /> in 1976 on coarse, barren waste material . The elevation, precipitation and <br /> 1 lifezone of each operation is contained in Table 1 . <br /> i The objective of the studies is to determine possible methods and <br /> materials for successful establishment of functional and diverse plant <br /> t <br /> communities on the mine wastes. <br /> Table 1 . Locations , elevation, precipitation, and life zones of the three <br /> study areas. <br /> r <br /> Material Elevation Precipitation Life Zone <br /> Operation Mined (m) (cm) <br /> Canon City Quarry Dolomite 1830 31 .5 Pinyon-Juniper <br /> Allen Mine Coal 2250 51 Ponderosa pine- <br /> Douglas fir <br /> Monarch Ouarry Limestone 2625 102.0 Subalpine <br />