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STATE OF COLORADO <br />DIVISION OF RECLAMATION, MINING AND SAFETY <br />Department of Natural Resources <br />1313 Sherman St., Room 215 <br />Denver, Coir?rado 80203 <br />Phone: (303} 866-3567 <br />FAX: (303) 832-8106 <br />DATE: November 14, 2007 <br />TO: Russ Means <br />j N 7e <br />FROM: Allen Sorenson <br />h <br />RE: Bulkhead Costs, :Energy Fuels Resources Corporation, <br />Whirlwind Mine, File No. M-2007-044 <br />COLORADO <br />1) 1 v F. S 1 0 N O F <br />RECLAMATION <br />MINING <br />SAFETY' <br />Biii Ritter, Jr. <br />Governor <br />Harris D. Sherman <br />Executive Director <br />Ronald W. Cattany <br />Division Director <br />Naturai Resource Trustee <br />Labor Rates and Various Adjustment Factors <br />Emnlovees .Including Overhead and Profit- RS Means (2007) Building Construction Cost Data <br />Laborer $41.65 <br />Equipment Operator (light) $53.45 <br />Carpenter $54.30 <br />Cement Finisher $49.20 <br />Welder $69.40 <br />Adjustment Factors: 1996 Terry Tunnel Bulkhead Costs to 2007 Costs <br />Note: one foot added to Whirlwind Mine workings dimensions to account for notching of bulkheads <br />Decline bulkheads perimeter area (10'+10'+13'+13')1.6' = 73.6 sq. ft. each <br />Pack Rat bulkhead perimeter area (10'+10'+13'+13')2.8' = 128.8 sq. ft. <br />Terry Tunnel bulkhead perimeter area (11'+11'+11'+11')8' = 352 sq. ft. <br />Decline bulkheads reduction factor: 73.6/352 = 0.21 <br />Pack Rat bulkhead reduction factor: 128.8/352 = 0.37 <br />:Decline and Pack Rat bulkheads perimeter length 10'+10'+13'+13' = 46 ft. each <br />Terry Tunnel bulkhead perimeter length 11'+11'+11'+11' = 44 ft. <br />Decline and Pack Rat bulkheads increase factor: 46 /44 = 1.05 <br />Decline and Pack Rat bulkheads cross sectional area 10'x13' --- 130 sq. ft. each <br />Terry Tunnel bulkhead cross sectional area I Vx1.1' -= 121 sq. ft. <br />Decline and Pack .Rat bulkheads ine-:rease factor: 130 ' 121.:-- 1.07 <br />Decline bulkheads volurrle: 7..7 cu. yd, each <br />Pack :Rat bulkhead volurlre: 13.5 cu. yd. <br />terry Tunnel. bulkhead volume (1.1'xi1.'x8');2.7 cu. 1t./cu. yd.::- 35.9 cu.. yd, <br />Decline bulkheads reduction factor: 7.7/35.9:::- 0.21 <br />Pack Rat bulkhead reduction factor: 13.5/35.9 0.38 <br />1996 .laborer $1.6.39/hr. - 35% benefits:--- $22.13/hr. <br />2007 laborer $44.65ft. <br />[..abor increase factor 41.65.122.13 = 1.88 <br />Office of Office of <br />Mined Land REtclmaii?,n Denver • Grand )unction • Durango Active. and InacAve Mines <br />i:,