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MINEBK00728
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Last modified
1/5/2009 9:53:39 AM
Creation date
11/18/2007 12:15:59 PM
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Mine Books
County
Boulder
Volume
17
Document
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A
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Cold Spring - 4 <br />TdINIHG & LfIHE 16ETHODS Contin. <br />The ladderwag is soanre and acaeseable. <br />At present work is confined to the 250 Poot level <br />west oP shaft where drlPting and stoping are carried <br />on. All levels in-the upper workings are abanded. At <br />the ?.50 Poot level a caneotion is made with an old shaft <br />that is Fully equipped with a safe laddorway. <br />The men aro raised and lowered by hoisting maohin- <br />ery. A load w8ighing 600 ponnda is hoisted a diatanoe <br />oP 250 Peet with a new 6/6 oable, a safety hook and <br />ohain Fastened to oable with socket and babbit metal. <br />~ldaterisl is hoisted Prom one level. <br />The State Code oP signals"and pull line and gong <br />aro used. The oode of signa~s is poetod at shaft and <br />on levels. <br />The skidway is native round polos and is in good <br />condition. The abaft ie secured with pillars on both <br />ends aF shaft Maohine drills aro used For drlPting and <br />stoping. The method of extrnation ie drifting and <br />ovorhead stoping. Stuns.and leggin of native pitta <br />are used and are 'in good oondition and enFFioiant. <br />Tramming is dono From ohutes and hand in steel buoketa <br />on wood trolloys and 18" gage 8~ T,raile, <br />The vonti.lati.on ie natural and suPFiaient being <br />oonneoted with old shaft 100 Foot From main sl~aiit. <br />Carbide lamps are used For lighting and all old <br />timbers have been removed. The ehaFt is divided into <br />two oompartmonte and a seauro ynd nooossablo laddarway <br />has more than one exit kopt in good repair. <br />S TAT I S T I 0 9. <br />'t'otal number of Faet in shaft 260 <br />u u u u n dr~Ft 200 <br />
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