E/MJ : engineering and mining journal . st of mining was $ per ton ex-tracted, and of milling, $1,252. Production is being main-tained at the maximum. One dividend of $ per share wasmade during the quarter, amounting to $697,485. A total of$4,649,900 has been paid since Apr. 1, 1915. The company hasadded materially to its property acreage during the quarter. November L83 L916 ENGINEERING AND MINING JOI RNAL ill mi iiiiiiiii ;i;i;:.. : ... Deteils ©f Prsicttiic&l Mimiimig mi :i iiiii:i ??!ii:n:,ii:::,::i :i:.::;:::i!::iii!::i::::iiiiinii „ :ni .: in Ravpiidl §lhaiF!i= wiftl
E/MJ : engineering and mining journal . st of mining was $ per ton ex-tracted, and of milling, $1,252. Production is being main-tained at the maximum. One dividend of $ per share wasmade during the quarter, amounting to $697,485. A total of$4,649,900 has been paid since Apr. 1, 1915. The company hasadded materially to its property acreage during the quarter. November L83 L916 ENGINEERING AND MINING JOI RNAL ill mi iiiiiiiii ;i;i;:.. : ... Deteils ©f Prsicttiic&l Mimiimig mi :i iiiii:i ??!ii:n:,ii:::,::i :i:.::;:::i!::iii!::i::::iiiiinii „ :ni .: in Ravpiidl §lhaiF!i= wiftlhiS^aspeimdledl EWlIRllheadl By Walteh Fiti n. .1 r.* Extremely rapid progress in shafl sinking has beenaccomplished at the projurty <il the Chief ConsolidatedMining companies property at Homansville in the TinticDistrict, Utah. The suspended bulkhead and shootinshown in the illustration permitted the timbering to beclone without stopping the work in the bottom of theshaft. This was accomplished by lowering the bulkhead,. THE SUSPENDED BULKHEAD FOR USE IN SHAFT SINKING by means of the chain blocks shown, a sufficient distanceto allow for a set of timbers. Tins arrangemenl addedgreatly to the safety and speed of sinking. The shaft is15 ft. 6 in. by 6 ft. 6 in. and is composed of two hoistingcompartments 1 ft. 2 in. square cadi and a manway i in. by 3 ft. 2 in., all measurements inside timbers. Thetimbers used are 8x8-in. throughout, placed on in porphyry formations and on 6 ft. centers inthe limestone formations. The shaft is lined throughoulwith 2xl2-in. lagging. The work of sinking was commenced on July 8, 1916,on contract by Walter Fitch. Jr., Inc., and in the firsl31 days a total distance of ft. of sinking had beenaccomplished. During the succeeding 31 days 861 sunk. The shaft was sunk through porphyry andlimestone. The former was unfavorable Eor drilli]account of sticking and the plugging of the hollo*used, but this disadvantage was bal
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectmineralindustries
