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~elaon - 4. <br />- E% P L O S I V E 3. <br />s CaliTornie Giant, 40p, powder; German Insoloid fnee; 5-a <br />cape and wooden tamping bare are employed. <br />Explosives in excess of one day's supply are not stored <br />I <br />underground. The average anount oT explosives kept in storage <br />m is 2,000. This is kept in a atone, iron-covered magazine, 8' <br />x 10',•stationed ZUU' east o2 the portal of the Bard Creok ten- <br />th. •nel. Tho magazine is usod Tor the atorago oY powdor only. Oils, <br />' oandlea and other coabustibles are stored in the oompresaor <br />room. <br />The device Yor thawing powdor is a tin tank hosted with <br />hot water. Tho devico is Y.ept in the smith's shop. <br />M I$I PfG fa MIME METHODS . <br />The aain opening is the Aelson Tunnol, 4' x 7' is tho <br />oloar, and ZS6' Sn longth~ timbered with poste and enpa Yor a <br />distance or :SU' Trom tho portal and tho balance of tho tunnel <br />is driven through solid rook requiring no timboring. The tun- <br />nel is a oroas-out, interaooting tho Elinor vein at the breast <br />' oY the tunnel. At tho point oP tho interseotion a driYt is <br />run 400' onat on the voin. ~o atoping is done on thin vein.but <br />tho ariTt is boing oxtendod. Tho Patterson vein is interaeoted <br />r' at a diatanoo oY 17b' Yrom the portal. Very little work has <br />boon done oa this voin, the driSta on eaoh aide measnring less <br />than 10'. <br />Tho Bnrd CreeY. Tunnol, 4' x 7'. has boon driven a diatanoo <br />oY f3U'. It is timbored Aith poste cna oapa Tor a diatanoo oY 6U' <br />Yrom tho portnl. This tunnel ie b0U' east oT,and LuU' lower <br />down on tho nountnin aido, than tho Aeleon 1'unnol and is boing <br />driven to gain Creator depth in doveloping the veins comprleing <br />tho Croup oT olaiaa. <br />Tho portals oT both tunnels are providod arlth wooden <br />doors. Piro-*rooY doosa have not been providod ea thore nre no <br />buildiage•nenr or ad~oinint tho ontranoe:to either tnnnol. Thero <br />aro no adaitional oxits as tunnels are ahort.•da noon as the <br />1 <br />;. <br />I <br />,. <br />'. I~ <br />Y i <br />i',!I I <br />:~ <br />,f j. <br />r j{ <br />~, <br />f <br />I, , <br />!; <br />j~I <br />i <br />i <br />' ~ j. <br />j <br />II ~ <br />~,, <br />~ ~, <br />~~~I <br />~ ~{~ <br />I <br />'I ~~ <br />~ ~; i <br />r, I! <br />~~ I~; <br />III' <br />~~ <br />)~ <br />~~ <br />4 <br /> <br />