The Cordova daily times., 1918-02-18

inches by q inches, cross-compound,
 two-stage, with a piston displacement | of 2,030 cubic feet of free air per min
 ute; it is directly connected to a 25O |
 h. D. Westinghouse synchronous motor. 1
 "In the power plant, which is on the l concentrator site, are two 305 h. D. 1 special Erie City oil-burning, water i tube boilers, which furnish steam at
 160 pounds working pressure The 1 prime movers are: An Allis-Chaimers | B and 17-inch by 21-inch reciprocal
 ing engine, direct-connected to a 400
 K.VA. Allis-Chalmers Class Al gen. orator; a 500 K.V.A. Westinghouse 1 turbo-generator, and a Pelton wheel,
 direct connected to a 200 K.V.A. West 1
 inghouse type G generator. Current l is generated at 480 volts and used at this pressure in the mill; for trans
 mission to the mines it is stepped up
 to 10000 volts, but is stepped down to
 480 where 1t is used Two oil tanks
 with total capacity of 153,O00 gallons
 hold the fuel oi!.
 At the concentrator the ore is
 crushed and passed over an automatic
 weighing belt, then 1t Is sampled and
 hand-sorted. The high-grade ore isl
 shipped without further treatment, but
 the low-grade is crushed and classified
 to obtain a high-grade concentrate,
 which is shipped, and a tailing winch
 goes to the teaching plant.
 | "A 6,095-foot tram, ,Leschen & Sons,
 connects the mine with 1,500.ton ore
 bins on Mccarthy creek, the difference
 in elevation of the terminals being 2,79S feet. Its capacity Is 100 tons in
 an eight-hour day. The diameters of
 the cables are: Loaded side, one and
 one-eighth inches; empty side, seven
 eighths inch, and haulage, three. fourths inch.
 "The power plant consists of ah 80 h, D. twin-cylinder Otto gas engine, 125-k. W. 3-phase Payne generator, l3h-h. D. gas engine, which congresses air for the starting device of the Otto engine, Sullivan, type w. c. 4, air
 compressor, driven by 75-h. p. mo- , tor, direct current 7-h. D. generator, . connected with a 212-h D. fan, 7-h. D. } alternating current motor, to run f 7-h. D. fan, a No. Cameron sinking } pump. worked by air or steam, and a l double-cylinder 6x8-inch air or steam ? hoist Sullivan drills are used under t ground.
 Mother Lode Copper Mines Com '' pany-The compahys property is . about one and one-fourth miles from t the Kennecott Bonanza mine, and v fourteen miles from Mccarthy, sta II tion nthe Copper River & North western railroad During the winte Il months the ore is sledded over ; 'l wagon road down Mccarthy creek t the station.
 "'The ore body is two to nineteen n feet wide. The predominant minera Is is chalcocite, which is associated wit it sulphides and carbonates. The cour t. try rock is limestone. The main or K body strikes generally N, p degree Id E.; it dips 80 degrees E. in the nortt IT ern part of the workings, and 70 dt le grees w. in the southern part. h. "The property has been opened O a four levels for a vertical distance c over 25O feet, the lowest level bein Is tapped by a crosscut at an elevation w. of 5,585 feet. A two-compartmen h. shaft has been started on this leve le though work has been temporarily dis 'r continued on account of the high cos le of power.
 h. North Midas Copper Company a. The property is situated about clever
 miles from Strelna, on the south sid' e of the Kuskulana river. In the grouI d are twelve lode claims, covering !; g number of outcrops of experiencing l, ore, the predominant mineral beinl a chalcopyrite. Four croSscuts have ,t been driven to intersect the lodes. Z Placer Mining.-Most of the placer 1; mining in the Copper River distrie IS was on tributaries of the Chistochina e and Nazina rivers, though a number 0 r smaller properties were worked on the e Bremner and other tributaries. O "On Dan creek, tributary of the s- Nazina, the Dan Creek Mining Com e- pany works a group of claims, AS the
 creek has a comparatively rapid fal a and is extremely turbulent during higf 6 water, this company has had to meet s many difficulties. In opening the k ground the main body of the creek is a fiumed past the area to be worked h wing dams set, bedrock Hume laid L. and the gravel washed into the Hume