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• Loaders: Cat 988B and 992D loaders were assumed to be used to load the Cat 773 <br />and 777 haul trucks. A smaller loader-972 model-was assumed for loading <br />agricultural limestone. <br />¦ Bulldozers (Dozers Dozers were assumed to be used for most heavy grading, re- <br />contouring, and slope reduction for the larger facilities such as the surface mine <br />backfills, the VLF, and the OSAs. For this work, Cat D 10 and D 11 dozers were <br />assumed in the cost estimate. <br />¦ Support Equipment: Earthmoving activities on a large scale will require support <br />equipment such as dozers for spreading growth medium, water trucks for controlling <br />dust on the haul roads, and graders to keep the haulage surface in good shape. In most <br />cases the respective equipment selected for these tasks consisted of D9 dozer for <br />spreading growth media, 5,000 gal water truck to water haul roads, and a Cat model <br />14 grader for maintaining haul roads. <br />¦ Other Equipment: Revegetation equipment selected included either a D8 dozer or a <br />D4 dozer mounted with a cyclone style seeder, chain, or harrow depending on the <br />• severity of the slope to be traversed. A combination hydroseeder / hydromulcher was <br />selected for distributing wood fiber hydro-mulch and for some of the seeding effort. <br />A conventional agricultural helicopter was selected for the steeper slope seeding and <br />fertilizing where normal agricultural equipment cannot be expected to operate. There <br />are a few other minor pieces of equipment utilized for specific tasks as outlined on <br />the individual facility cost sheets. <br />To estimate operating costs for the selected machinery, appropriate equipment rental <br />costs per hour were developed from published 2008 equipment rental rates from Wagner <br />Equipment Company of Denver (www.wagnerequipment.com/rentals) and through <br />discussions with Wagner's Fleet Leasing Manager, Mr. Joel Chrisman. Other rates for <br />equipment were obtained from the Cost Reference Guide for Construction Equipment <br />(most recent update-2nd half of 2007). Another reference source for equipment rates and <br />demolition rates is the R.S. Means Heavy Construction Cost Data for 2008. Labor costs <br />were developed from the most recent (2006) Colorado Labor Market Information for <br />Occupational Wages available at www.coworkforce.com. Since these were 2006 labor <br />rates, they were inflated to 2008 dollars using the consumer price index. <br />• Cripple Creek & Victor Gold Mining Company <br />Cresson Project Mine Life Extension <br />12-4