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i~ <br />i <br />i i i <br />'' L,. <br />!.~ ; r <br />I ~j <br />it <br />!~~ ` is <br />I <br />1 <br />1 <br />~~~ <br />itl <br />I,' <br />I <br />~: <br />ra <br />~h <br />,~ ~ <br />C~ ~ <br />~i~. <br />,,: <br />lu! <br />~ ~~ j ~ ~~ <br />i~~ij <br />~' ~ j~ <br />I!~ 4 <br />I~ I S}~ <br />~~.i ~d <br />I <br />`i <br />I~~ ~N <br />I; <br />IIationsl Radium Institute - 5 <br />S II H F A C E P I. A II T <br />Surface nlsnt consists of 1 boarding house and several tents, <br />small smith's shop. One 25 H. P. gas engine just insta3led. <br /> 1: ~ P I. O 5 I V 8 .3. <br />i?upont 40o Gelatin powder, monarch fuse and wooden tamping <br />bars are used. The average amount o3 explosives kept in storage <br />ie 20D0 lbs. This is stored in a magazine provided for the <br />pu-pose, located about 300 feet from other workings. Doable hot <br />water boiler used for thalsin3 powder. <br />1:I1~IIl'G ApiD 1CIIIH 1Q&THOD3 <br />Si'ork is being carried on on all the claims at the present <br />time. 1~,ain openings are eats sad adits. The method of ore <br />extraction is deifting'and stoping, with single hand drills. <br />The method of timbering is stalls. The timbers are green pinon <br />prepared by hand, and are sufficient to secure safety. IInder- <br />ground tramming--none. Ventilation is natural. 3nsface trans- <br />portation is done by wagoa. 1uethod of ore treatment is dry <br />concentration. There is a mill being erected on these prsmises. <br />Dnderground lighting is done by candles. <br />S T b T I S TIC S <br />Total number of feet in adita, 350. Cost per ft. X10.00 <br />Average tonnage per month, 70 shipping. 400 milling. <br />Average assay valae ore per ton abort 2~ ffa 08 5~ ~2 05 <br />Cost of 6tee1 12~. Coat of powder 16E. <br />Cost of transporting supplies to mine lye <br />Cost oY transporting ore to railroad X20.00. <br />man employed: <br />~ lb 2uinere <br />3 trammers <br />~1 <br />~~ 1 Ore Aasorter <br />w3.00 Yor 8 ho~+ shift. <br />3.00 Yor 8 hoar shift. <br />3.00 Yor 8 hoar shift. <br />