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Last modified
1/5/2009 10:02:38 AM
Creation date
11/18/2007 12:19:52 PM
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Mine Books
County
Boulder
Volume
9
Document
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-7- <br />MINING AND MINE METHODS. <br />Washburn shaft T7o. 1 is 45 ft. <br />(level deep:• Drifts on the 40 ft, <br />' 40~ft. East and 40 ft. West. <br />Washburn shaft No. 2, g5 ft. deep. Drffts at the qp ft, <br />level, 75 ft. East and <br />50 Pt. West, from whioh the veins ha8e <br />:have been atoped to the surface. <br />,The other workings consibt of aurfaoe openings, ex8ept an <br />edit tunnel, where work is now being done, and 221 long. <br />All work ie done einglehand. Timbering is of red apruoa <br />sawed and peeled. A 16 aubio ft. Truax oar with 8 lb steel <br />rail traokage~ is used in the edit. <br />Ventilation is•secured with opening to the surface. <br />The edit is being run to connect with the main shaft. <br />The dntire development on the property is 694 feet. <br />+~ V <br />! ! <br />1 <br />1 <br />1 ~ <br />e <br />f <br />~~ <br />~~ <br />f <br />i; <br />~ ;' <br />s <br />I <br />
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