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A <br />Big Nive - 6. <br />• 2dI H IIIG & Z3IgE METHODS- Conlin. <br />on the California vein 600' from the portal. Those exits are <br />.kept in gevu"repair and equipped with sale, seonre and aaoesa- <br />ible ladders. The shalt on the Coluubia vein ie d80' in depth <br />and the one on the Madeleine vein is 40U' deep. There are aev- <br />oral other shaYta, bnil$inga and equipment but all are old and <br />abandoned. <br />Aotive work is untried on in +,vin2e on Columbia vein; <br />Dewdrop upraise; in hlook 12 in east 20U' drift; blook 13, Cs- <br />1nmbla:~ehaPt; stops in west 200' Madeleine drift. <br />Thn iiiwot wlnze is divided into two oompartmenta; ono <br />oompartment is zeed•Sor a bucket-way and the other for a lad- <br />derway. 7'he ladder-way oontains orator and air pipes, is equip- <br />ped with Bare, sooure and aooeeaible laddersand has ono landing <br />at a dopth of 100'. The total depth of the winze is 1&0'. <br />~ The tunnel is provided with a good and eufiloient door <br />to provent tho admission of noxious gases or fumes in oaeo of <br />fire. The doors are plaood at a point 7b' Eton the portal of <br />tho~tunnel and oan bo smelly operatod from without. <br />-Q Tho aothod employed for hoiati4~g is air. 7'ho mom aro not <br />raised and lewerod with t he hoisting naohinery. A weight oi' <br />1.000 is hoisted a distanoe of 300' Kith n 3~4-in. atoel wino <br />oablo that has boon in neo ono day. ldatorial is hoiatod from <br />ono lovel. Tho bnokot 7~lc•is taetonod on and oY oablo with e <br />safety hook and ohain tastenod with olamps. The hook and ohain <br />have been in use ono year. <br />(~ The•State oode oY signals and pull belle aro omployod. <br />Tho bell line is IIo. 10 wire in good oondition. Ilo nodes, aotioeo <br />or ordure are postod ut nny puiuL but 6upp21os havc hcon loft <br />With the managoA6nt and orders givon to properly. post than Sa <br />their respeotl~o plaoos. <br /> <br />The aothod et ore extraotion is overhand,atopint alai dritt- <br />int by assns et Sulliran and 80. 3 Shaw naohino drills. 8oae <br />ain~le han3 drilling is done nloo. <br /> <br />The method of tinboring is poste and oeps and atolls oo~- <br />