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Corydon - 4. ' <br />- BDRBACB' PLAB'T- Contin. ' <br />tent~person^ from-tripping~and~tailing in the ehatt~ana prevent <br />material.'irbm ta111ag in the shaft while damping. <br />... -. ~ aaazoslvES. <br />. 'Dupont powder - 46~;-8ermaa Iasoloid tans; 6=a oapr and <br />woodsn~tempiag bare are employed. Explosives in-ezoess at one dad's <br />supply are not •stored~uadergrouad. ••'' '~~ <br />The average emonat of explosives kept in storage is 300. <br />The magaaine ia~sitnate 100'. west of the-.bait home and iS 6 <br />9ma11 tiame.• iron-covered b$l.lding• need for the'• Storage= of pow- <br />der only. All other supplies are stored is the engias room. <br />Ea device for thawing Powder,io provided as the kind of <br />powder used does not harden eaoept is eatremely•hold weather. <br />Y I B I B G ~O M I B E METHOD 3. <br />The main opening ie a shaft 720' in depth and cribbed for <br />e disteaoe-ot 60' from the anrtaoe with two-inch plank. The <br />baianae Ot t'he shaft iS timbered with Stnlls.•The ahatt:is di- <br />vided Sato two aompartmeatS for a ladder-wag sad hnaketTway~and <br />oeoh compartment iS 3' x 3' in-the clear. The ladder-way oon- <br />taias air pipes. has landings b0' apart and ie equipped with <br />Sate and aaoessible ladders.` ~• <br />Drifting has been done aS follows: 120-tt. level: east. <br />100'{ west; 140'. 226-~•:level: east; 140': wsst,'100'. 300-It. <br />level: asst; 200'; wssty,27b'. 400-tt.•level._east. 320!;~wsat. <br />600,~•q~he balance of the Shaft has not been nnwatered and no <br />report oaa be made oa devs~.opment done below the 600-it. letel. <br />Ynoh of the•gronad above the 600-tt. level hen been <br />.toped oat. Stoping sad drifting on both sides of the shalt is <br />now osrried on 1n the 200-tt., 300-it. sad 400~it' levels. <br />To additional ezit iS provided as the shaft 1s ou~eide of <br />the'shsit hone and there .is no danger from Sire. <br />,ihe:method .employed for hoisting i^ otssm and the man are <br />