PERMFILE105152

• Permit No: C1984065
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: APPENDIX 4.3-1 APPENDIX I GEOTECHNICAL CORE LOGS
• Media Type: D
• Archive: No

I-13
~~ STORM KING MINES - HOLE No. 8A
ROQF OF UPPER WHEELER SEAM
DEPTH, FT. GEOTECHNICAL DESCRIPTION
994.1-997.0 CLAYSTONE: Dark gray; homogeneous except for the occur-
rence of numerous scattered shell fragments; fairly carbon-
aceous; solid interval; well indurated; hardness 6; fairly
rough separations generally closely spaced(a~70°-BO°);
competent; estimated compressive strength 35 MPs; very good
cavability; recovery 100X; RQD b4X; Ip~179; ID~70.1; IpN~2.6.
997.0-1000.6 SILTSTONE: Medium to dark gray; local sandstone and clay-
etone interbeds; thinly bedded to laminated; lightly carbon-
aceous; solid interval; well indurated; hardness 7; separa-
tions generally closely spaced(a~70°*_); occasional scattered
shell fragments; competent; estimated compressive strength
55 MPs; good cavability; recovery 100X; RQD 75X; Ip~525;
ID~303; IpN~1.7.
100D.8-1008.0 CLAYSTONE: Dark gray; locally slightly silty; homogeneous
appearance; carbonaceous; solid interval; well indurated;
hardness b; smooth open joints occur from 1003.7' to 1004.5'
(a~18°) and from 1006.5' to 1007.0'(a~20°); fairly smooth
bedding plane separations closely to moderately spaced;
numerous scattered shell fragments; competent; estimated
compressive strength 40 MPs; good cavability; recovery 1007,;
RQD 85X; Ip~173; ID~70.1; Ipp~2.5.
1008.0-1014.8 SANDSTONE, SILTSTONE and CLAYSTONE: Thinly to moderately
thinly interbedded; tan to dark gray; thinly bedded; variably
carbonaceous; solid interval; very yell indurated; hardness
b-7; separations along carbonaceous bedding planes closely
to moderately spaced(a~55°-70°); competent; estimated com-
pressive strength 60 MPs; fair [o good cavability; good
stable roof strata; recovery 100X; RQD 66X; Ip~499; ID~283;
IpN~1.8.
1014.8-1016.3 CARBONACEOUS CLAYSTONE: Dark gray; slightly silty content
increasing dovnvards; thinly bedded; scattered coaly stringers;
fairly solid interval; yell indurated; hardness 6-7; smooth
tight healed joint from 1015.3' to 1016.1'(a~12°); separations
very closely to closely spaced(a~64°); competent; estimated
compressive strength 25 MPs; very good cavability; moderate
protection and roof support may be required, but should pro-
. vide good rock anchorage site; recovery 100X; RQD 63X; Ip~151;
ID~137; IpN~l.l.
SEEGMILLER IMERM1AT1OnAL