Show THE MASON VALLEY VALLE Y MINES MIN ES CO ey WILL C HIGGINS martwi the property of the alason valley mines company situated situate d about two miles west of mason nevada consists of seven patented claims which are located on the east slope of the range the property is easily acceus so easily available in its workings the perfect system of ore handling the clec atrio haulage the loading stations and ore bins at the upper terminal al of the aerial gravity tram and the substantial surface buildings gs IN in S e 0 t 00 g ore loading terminal mason valley nine photo by will 0 higgins sible by a good wagon road and on the surface as well as in the mine workings the equipment and improvements as well as the method of mine development and operation indicate that the greatest skill and care is exercised on the part of the management the company maintains an output of about tons of ore daily and mine development and operation is being pushed systematically and energetically by the system of mining employed a large tonnage is left in the after being broken down to be handled at a later date and it is stated that in the ore so handled there are over tons ready for shipment nt to the which when consigned to the reduction plant at thompson will be entirely free from overhead over head expenses it is claimed also that the available ore in the mine workings and in sight will closely crowd tons at the present time it is a revelation to even the experienced and practiced mining man to visit the property of the mason valley mines company one is surprised even at the immensity of the ore deposits and the great blocks block of 01 pay ore blocked out practically on four sides which are to be seen on the different levels and in the different workings of this till s property although prepared to see a great grea t mine and a well equipped almost property the insignificant tunnel portals no DO indication Ind leation of the great giving g wealth of ore now and improvements make a strong impression upon the visitor and strengthens his hh conviction that here is a property that is possessed of wonderful possibilities and that is most ably managed formation the formation at the mason valley va ll 11 ey Is 13 very similar to that of the yerington maia M ala chite described elsewhere in this issue bissu e and it has the same strong croppi droppings crop pings and th same wonderful surface showings ng mine practice and DevelOp development me nt A great deal of the ore supply is ig from workings near the top of the moua atou tain the greatest tonnage however corn CM from the immense opened up 1 in ti t nels nos 3 and 4 tunnel no 4 is ig t 41 main working tunnel and is equipped wit heavy track and one and two ton cars v t cars being moved by jeffrey electric locon tr tives ives in operation all of the ore aej ai limestone is delivered from the upper I 1 lev evel f through chutes to or pockets in no 4 tur ti nel from the pockets the ore is dump into cars eight of which make a arati tra load which is hauled by the mine locon tives to the receiving bin at the loada station of the aerial tram the bin bill di d charges into a blake crusher having opening of fifteen by thirty inches the or 0 is crushed to about a six inch rin ring 9 and ana discharged d onto a 22 inch belt conveys from the conveyor the ore is di into one of the four receiving bins hol ho ing tons each the bins are equi equips with air operated gates by means of the tramway buckets are quickly and pr perly filled the tramway co comprises ta t otto friction system and the lin line e is ax 62 feet in length its capacity being to per hour at the receiving station estatio n A att aft lower end of the tram the buckets of are emptied into receiving bins the 1 be being ing automatically discharged into 54 50 t cars on the line of the nevada copper P I 1 railroad at mason the mine practice as described bj byj A oral eral manager jules labarthe is as folio the method of working the mine is sl 7 WA 4 X va 7 21 n ak bew z 41 ar i all OW S si vw bvm 1 1 tunnel no 4 mar mason maron on valley mine photo by will C biggins mf the std ing by the shrinkage system have a width of approximately forty fo j and extend in a north and south diorec direce 0 the it for to feet in length floor is started at a point from twelve to fifteen feet above the level and chutes are established from thirty to forty foot centers these chutes discharge into the level below As advances the are kept full of broken ore only enough ore being drawn out each day to allow the operation of machines on the back it is found that something less than 50 per cent of the broken ore is removed the broken ore remaining in the until the next working level above has been reached at which time the entire accumulation is avail able mine equipment the property of the mason valley mines company is equipped with an ingersoll rand air compressor of cubic feet capacity this is driven by a Westi westinghouse ouse induction motor of horsepower rating in addition fd to this compressor capacity an ingersoll duplex power driven compressor has been installed of a free air capacity of 1 cubic feet at pounds pressure thia machine is driven by a general electric W 4 V r ki el 77 Z el X e ai 00 in 71 lower terminal and receiving station of mason valley aerial tram photo by will 0 higgins 00 horsepower induction motor the power a nd ind compressor building is feet in Kii of heavy frame work construction covered by corrugated iron waugh drills are employed in drilling operations erat I 1 rations ions A 25 K wt W volt D C generator furnishes power for the operation of phe ap h 4 ton jeffrey locomotive all mine ma gl chinery is operated by electric power fur finished dished by the truckee river general electric ric company which has constructed 1 a 11 transmission ran line approximately ninety niles miles in length from verdi to the t of the mason valley company at thompson yh ho ompson and on to the mining property athe f 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