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Dames & Moore, 1999 - USDA Forest Service

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SOURCES: SRK<br />

'nfi""On<br />

Limited Air Movement<br />

Leaching of Oxidation<br />

Products from Stopes<br />

Intesef3on with<br />

Cross Section I-I'<br />

Surface Water<br />

r<br />

Local Ponding<br />

(Buckskin<br />

Formation)<br />

Northwest Geophysical Associates, 1997, Seismic Line A-A: 6-6: Holden Mine<br />

Geophysical Investigation.<br />

Youngberg, E. A., Wdson, 1 L., 1952, The deology of the Holden Mine, Economic<br />

Geology. K 47, No. 1, 1952. pp. 1-1 2.<br />

W.A.B., 1942, Detailed Surface Geology Map. Howe ~ound'co., Chelan Division<br />

Approximate -1% Grade lor<br />

Venblator Tunnel and +1% Grade for<br />

1 .SLevel Ma~n Tunnel'<br />

F.E., H.B.S.. 1938, Geology of 1500 Level, Howe Sound Company Chelan Division<br />

DAMES & MOORE *<br />

1000 Level Portal<br />

a . ..... .. .. :.<br />

open<br />

LEGEND<br />

\<br />

stope<br />

Backfilled stope<br />

Dike<br />

700 Level Portal<br />

-.-.-.- Transform fault<br />

-+ Direction of water movement<br />

Direction of air movement<br />

5% Level Portal<br />

' NOTE:<br />

This cross section is generally parallel to ore ;<br />

body and 1500-level ventilator tunnel. Due to ,<br />

the 1500-level main tunnel having +1% grade, ,<br />

water flow is toward main portal opening but not<br />

shown on this figure. (See Figures 6.1-2a and<br />

6.1 -2b)<br />

Approximate Groundwater<br />

Conbnues Approximately 8.000'<br />

---•<br />

~mately<br />

--<br />

0 500 1,000<br />

Approximate<br />

Horizontal and Vertical<br />

Scale in Feet<br />

Figure 6.5-3<br />

GENERAL WATER AND AIR FLOW FEATURES<br />

IN THE UNDERGROUND MINE-SPRING<br />

A DAMES 6 W R E GflOUP COMPANY Holden Mine RIIFS<br />

! Draft Final RI Report<br />

Job NO. 17693-005-019

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