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bats, completely plugged portals, and those with poor portal/internal stability, which may collapse in the near <br /> future and preclude bat use. <br /> Golden Opportunity Project Summary <br /> The Golden Opportunity Project was comprised of 13 individual mine sites (adits,high wall features, and <br /> stopes) located in Golden Colorado (Jefferson County),just west of Highway 93 (Figure 1). These mines are <br /> located between 5,900-6,350 feet. External and internal surveys of all mines took place in March 2012. <br /> Of the 13 mines surveyed, three were scored as Priority 1, and nine were Priority 3 (Table 1). The Priority 1 <br /> scored mines were not recommended for further surveys because of observed bat use, depth, complexity, etc. <br /> These were sufficient factors to recommend bat gating. There were no priority two mines that were revisited. <br /> Santa Fe Project Summary <br /> The Santa Fe Project comprised 27 individual mine sites (adits, subsistence features, shafts) located in Clear <br /> Creek County, south of Idaho Springs, Colorado (Figure 2). These mines are located between 8,600-9,000 feet. <br /> External surveys of all mines took place in March 2012, during which time internal surveys were also <br /> completed for all of the mines. <br /> Of the 27 mines surveyed, six were scored as Priority 1 (22%), six Priority 2 (22%), and 15 were Priority 3 <br /> (56%) (Table 2). The Priority 1 scored mines were not recommended for further surveys because of observed <br /> bat use, depth, and/or complexity which were sufficient to recommend gating. All Priority 2 mines were <br /> revisited in the summer for video surveys or winter hibernacula surveys. All the Priority 2 mines were surveyed <br /> again, and no bat use was observed; therefore, all the mines were completed, and no gates were recommended. <br /> Gate Recommendations <br /> Golden Opportunity <br /> Of the mines surveyed for Golden opportunity, three (23%)were recommended to be gated and four(77%) to <br /> be closed (Table 1). Results of surveys for those mines recommended to be gated did show evidence of bat use <br /> (guano and moth/insect parts), and bats were observed. <br /> Santa Fe <br /> Of the mines surveyed for Santa Fe, six (22%) were recommended to be gated and 21 (78%)to be closed(Table <br /> 2). Results of surveys for those mines recommended being gated did show evidence of bat use (guano and <br /> moth/insect parts), and/or bats were observed. <br /> Gate types used on other DRMS project sites have included bat slot gates, window or"ladder" gates,full gates, <br /> and culvert style gates. The bat gate designs used in past projects have been utilized in Colorado for over 20 <br /> years. These gate types have proven to be accepted by various bat species and for different bat roost types <br /> (Navo and Krabacher 2005). Full or ladder-type gates with access doors having a padlock are the preferred gate <br /> tube for both Golden Opportunity and Santa Fe Project Sites. Photographs of mines to be gated are in the <br /> Figures, Tables, and Photograph section of the summary report. <br />