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BONDING CALCULATIONS <br />ENERGY FUELS MINING COMPANY 1988-9 EXPLORATION PROGRAM <br />1. Sealing Drilled Holes <br />Aaeume: Each hole drilled will encounter aquifers requiring <br />a 50 ft. column of cement seal. The remainder of each hole <br />will be filled with abandonment fluid. <br />Total No of Drillholes: 18 <br />Drill hole diameter: 6 in <br />Total footage drilled: 5800ft <br />Gallons of fluid per linear foot 1.5 <br />Cost of cement seal material $.50 - $.70/ft use $.60/ft <br />Materials costa: <br />Cement - 18 holes x 50 ft x $.60/ft = $ 540.00 <br />Abandonment fluid 5800 f t - (18x50 f t) <br />- (18x10 ft) x 1.5 gal/ft x $.10/gal = 708.00 <br />Equipment and Labor Coats <br />Rig, water truck and 3-man crew - <br />$100/hr x 4 hrs/hole x 18 holes = 7200.00 <br />Water - $20/load x 2 loads/hole x 18 holes = 720.00. <br /> Sub-total $9168.00. <br />• 2. Plugging Drilled Holes <br />Place 1 non-slip octo-plug in each hole, mix 1 bag of cement <br />per hole and place cement in hole. <br />Materials costs: <br />Octo-plugs - $2.00 each x 18 holes = $ 36.00 <br />Cement - $12.00/bag x 18 holes = 216.00 <br />Labor Costa <br />2 man hours/hole 0 $15.00/hr x 18 holes = 540.00 <br />Sub-total $792.00 <br />3. Backfill Mud Pits <br />No. of pits: 22 <11 sites-2 pits each) <br />Size of pits: 20 ft x i6 ft x 6 ft <br />Backfill with backhoe or dozer 0 $60.00/hr <br />requires 2 hrs/pit <br />Equipment and labor costa <br />Backhoe or dozer 0 $60/hr x 22 pits x 2 hr/pit = $2,640.00 <br />4. Regrade Drill Sites <br />No. of sites: li - all on moderate slopes <br />• Size of sites: 100 x 40 = 4000 sq ft <br />Regrade with small backhoe or dozer 0 $60.00/hr <br />requires 2 hrs/site <br />