PERMFILE139347

• Permit No: C1981014
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Doc Name: MR-9 to MR-13
• Section_Exhibit Name: EXHIBIT 15 Part 2
• Media Type: D
• Archive: No

• Bonding Calculations
Energy Fuels Coal, Inc.
Southfield Mine
1987 Exploration and Development Drilling Project
1. Sealing Drill Holes
Total number of drill holes: 3
Drill hole diameter: 6 inches (B-1, CC-54A)
10 inches (R-1)
Total drilled footage: 1,850 feet
Gallons of fluid per linear foot: 1.5 (6 inch)
4.1 (10 inch)
Cost of cement seal material: 50.60/ft (6 inch)
51:64/ft (10 inch)
Assume: Drill holes B-1 anc CC-54A require Soft. column of
cement seal to plug aquifers. Drill hole R-1 will be steel
cased and grouted, .requiring only a surface plug.
Materials costs:
Cement: 2 holes x Soft x S0.60/ft 560.00
Abandonment fluid: 1,410ft - (2 x SOft) - (2 x loft)
• x l.Sgal/ft x 50.10/gal = $194.00
Labor and Equipment
Rig, water truck and 3 man crew:
5100/hr x 4hrs/hole x 2 holes = $800.00
Water: S20/load x 2 loads/hole x 2 holes = 580.00
Subtotal: S1,134.00
2. Plugging Drill Holes
Materials costs:
Octo-plugs: S2/ea x 3 holes = 56.00
Cement: $12/bag x 3 holes = 536.00
Labor Costs: 3 holes x 2 man-hrs/hole x 515./hr $90.00
Subtotal: $132.00 z
3. Backfill Mud Pits
No. of Pits: 3 holes x 2pits/hole = 6
Dozer or Backhce cost: S60/hr
• Equipment and Labor Costs:
Dozer or eackhoe @ S60/hr x 6 pits x 2hr/pit 5720.00