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• extended from 2880 through 1945. Eleven (11) mines are known to have <br />operated in the mine and adjacent areas. The largest mines in this area <br />produced coal from the upper seams in the Vermejo Formation with a number <br />of relatively small mines operating in the same seams currently being <br />mined by the Southfield operations. <br />Table 3, Previous Mining Operations - Mine Area, presents known <br />information including mine names, seam mined, period of operation, mining <br />methods, and total production for area mines. Location and extent of old <br />mine workings have been determined from mine maps and other information <br />obtained from the Colorado Division of Mines and other sources. This <br />information is presented on the Mine Area Surface and Groundwater <br />Hydrology Map, (Map 12). <br />Within the mine area, the surface disturbance area, as delineated on the <br />Mine Surface Facilities Map, (Map 18), is utilized for mining operations. <br />All other areas within the mine permit and adjacent areas are utilized as <br />• undeveloped rangeland and wildlife habitat. <br />Loadout Area <br />Prior to establishment of the adjacent town of Florence, Colorado, <br />construction of the AT$SF railroad spur, and initiation of Loadout <br />activities, the Southfield Loadout and adjacent areas were utilized as <br />undeveloped rangeland and wildlife habitat. With development of this area <br />wildlife was displaced, however, rangeland use has continued on <br />undeveloped areas to the present. <br />There has been some development of areas immediately to the east of the <br />Loadout for residential/commercial use. Generally, this development has <br />occurred concurrently or subsequent to initiation of Loadout operations. <br />Limited areas to the south and west, adjacent to the Oak Creek drainage <br />have also been upgraded through irrigation to improved rangeland, pasture <br />land, or hay cropping uses. <br /> <br />2.04.3-3 <br />