PERMFILE57947

• Permit No: C1980005
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Doc Name: MINE AREA WORKSHEETS
• Section_Exhibit Name: TAB 13 ATTACHMENT 13-3
• Media Type: D
• Archive: No

Nine Area Seneca II - WC Pit
Project: Highwall Reduction
Task Drill 8 Shoot Highuall
YORKSHEET N0. YC-4
OTHER RECLAMATION ACTIVITY COSTS
Total No. Holes = 5.600' = 207 Noles x 7 Rows = 1,449 Holes
27
Total Fee[ of Drilling Required Total Amount of Explosives
140 ft/7 holes x 207 = 28,980 ft. 7,226 lbs/7 holes x 207 = 253,782
Avg. Drilling Ra[e = 2 ft/min
Time = 28.980 = 242 hrs
2 ft/min x 60 min/hr
Cost Estimate Calculations:
Drilling Cos[ _ (242 hr x 230.37/hr) _
= 555,750
3.6 bits a 51500/bit = 55,400
Explosives: 50.15/lb x 253,782 lb = 538,067
TOTAL = 599.217
IS D~ z~n (o
Sa, c~ n ~-
bt, IS'o.Ub
sl ~ Sq4 °~~' ~q`b
1
~:
~~ ~~ 6~
/ h~Q
~' Lv
aal 20 ~!,
Awee
9~ 7 J7. 1.4 n,
13 9 rc~ss
~~.
~~~
0(~ e.~. Fwi'C
13 ~ CSC.
i ~ o S VY:
~~` t,'~S
Zsc~ ~.~e
•
•
u