1986-11-28_GENERAL DOCUMENTS - C1981017

• Permit No: C1981017
• IBM Index Class Name: GENERAL DOCUMENTS
• Doc Date: 11/28/1986
• Doc Name: Bid Documents ‎(IMP)‎
• Permit Index Doc Type: General Correspondence
• Media Type: D
• Archive: No

Ms. Candace Thompson
November 26 , 1986
Page - 4
5, 825 ft. x 20 sc�. ft. = 116 , 500 cu. ft.
A B-8 demolition crew can remove 21, 500 cu. ft. per day.
116, 500
21, 500 = 5. 4 days
5. 4 x $3, 222 per day = $17 ,400
17 , 400
5, 825 = $3 . 00 per linear foot.
This is the figure we have used throughout in our calculations
for easy access conveyor systems. How did MLRD come up with
$132, 238 for the tunnel to preparation plant, $223 ,446 for
preparation plant area and $230 ,771 for the $utey area? For
example, the conveyor system to the Sutey refuse pile from
the preparation plant is 1950 feet long.
1950 x 3 = $5, 850 not $230 , 771
We don' t see any valid reason for recalculating costs of
demolishing conveyor systems .
Backfilling and Grading.
MLRD' s first point with respect to backfilling and
grading is that stringent correction factors should be applied
to dozer production at the mine portals . They have reduced the
rated push production for a D-8 dozer working on the relatively
flat mine benches to only 26% of it' s rated capacity, as follows :
Mine Unadjusted Production Adjusted Production
1 920 Cy/Hr 221 Cy/Hr
2 1, 180 if 322 It
3 680 it185 it
4 520 171 "
5 920 195 "
Total 4 , 220 1, 094 "
1094
4220 = . 26