Laserfiche WebLink
~~ pittsburgh Ezt-4. <br />, .. - S U-R~~':=9'C=E P L:A A T-- Contin.. . <br />shop and:ohanging=zoom a=e ell:under.one rooY:.Ho::proteozion <br />. _ _.. <br />against Yire le-provided:'- ~' °`" <br />The:collar-of~the.she.ft'.is oY:eu3Yioient.height to pre- <br />vent persons from tiipping•and falling in the-shaft and, is also <br />provided vrith a good end'suYYioient.door to prevent materiel . <br />from falling in the shaft'while dumping. -,, - <br />- ;r <br />E% P L O S I Y F S. <br />Dupont"powder - 40$. German.Ineoloid'Yuse, 6-%.oape.aad <br />wooden tamping bars are employed. Only about.lU~.oY.powdex are <br />kept on hsnd at one ties and this le stored-in a drift that,ie <br />situate 16U' east oY where active work is oarried on..Ho flevioe <br />for thawing powder ie provided.ae the kind of powflor used door <br />-sot harden exoept in very sold weathor.' <br />MIIiI HG & ldIAE 2dET HODS . <br />Tho main oponing le a shaft 1b0' in depth,.oribbod vrith <br />2-inoh plank its ontire depth and dividod into two oompartmente, <br />sash 4' x 4' in the oleer, and used for a ladder-way and buokot- <br />way,respeotively. Tha ladfler-eray is oquippad with eaYe.,,eooura <br />and oooeeeible ladflors, oontains sir pipes and has langings not <br />to oroead 20' apart. ' <br />At a depth o~ 160' adrift le run oast 16! and west 30'. <br />From the east flriYt a oroee-out Se run north 104'. Drifting-has <br />boon done from Chia and a oroee-cut run west a fliotanoe of 80' <br />and:ouet s flisbanoe of 190'. Eighteen foot from bhe latter <br />oroee-out an upraise is being made to t}~o eurfaoe. This upraloo <br />will be used fora main shaft as soon as oomplebea. <br />Aoti9e work ie oonYinefl bo tho upraise and retimbering <br />old ehe,it where neoaea. Tha upraise le blmbared with 8" x 1u" <br />square bimbere: <br />An additional erit So proviaod through a ehafb 30' east <br />of the olA ehafb whioh ooruieota v+ith the 1ti0-it levol in the <br />