E/MJ : engineering and mining journal . s cylindrical, about 1 ft. in diameterand 3 ft. high and made of heavy canvas with a doubletop. Small loops on the bottom and sides permit its at-tachment to the back of man or animal—as circumstancesdemand. Its volume is sufficient to contain a blanket rolland the personal effects of the user. It is waterproof andcan lie stowed in a variety of places depending on itspacking. Its use as. a sleeping bag for the owners Feetwhen they stick out of the end of a shelter tent hashcell known. •Mining engineer. Duektown, Tenn. November 11, 1916 ENGINEERING AND \l


E/MJ : engineering and mining journal . s cylindrical, about 1 ft. in diameterand 3 ft. high and made of heavy canvas with a doubletop. Small loops on the bottom and sides permit its at-tachment to the back of man or animal—as circumstancesdemand. Its volume is sufficient to contain a blanket rolland the personal effects of the user. It is waterproof andcan lie stowed in a variety of places depending on itspacking. Its use as. a sleeping bag for the owners Feetwhen they stick out of the end of a shelter tent hashcell known. •Mining engineer. Duektown, Tenn. November 11, 1916 ENGINEERING AND \ll\l\i, JOiURNAL gjiiiiiiiiiiiiiiiiiniiiiiiiiiiiiiiiiiiiiiiinii Illllllllllllllil iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiniiiiiiiiiiiiniwi iiiiiinuiin etlaals of MiMiiini^ e^snd SmaeMiimi h^tevy Csnptpisigle {Fob* Sstm !>v Aim 11ri; (. Damj aes The battery carriage for battery supplies shown inthe accompanying illustration was buill in the shops ofthe Aurora Consolidated Mines Co., Annua. Nev., anil. CARRIAGE FOR BATTERY SUPPLIES lias proved to be quite a success in handling the heavydies, shoes, bossheads ami false dies to from theforty L,550-lb. stamps, li was designed by Mr Coutoure,former master mechanic I the company. ;?; Spiff©.! TxuiIb©°Mflll FeedersBy Arthur C. Daman* With the introduction of Dorr classifiers in closed cir-cuit with tube mill-, the best method l conve; ing thecoarse sand overflow of the Dorr to the tube-milltrough became a problem. In recenl years the introduc-tion of large spiral - - on the tube mills has made it possible to wash the sand from Dot rg• a «pulp consistency, it behooves us to gel the best regulationof pulp feed. This is obtained with spiral feedeican be connected to th


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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectmineralindustries