Show the yerington agton copper district di d by SAMUEL SHAW ARENTZ chief among the producing mines of the yerington mining district of nevada for the year 1913 are the mason valley mines company the nevada douglas copper company mcconnell mines company the malachite empire nevada blue jay new yerington smith valley mines company montana yerington yerington copper yerington malachite yerington mountain and others whose production has been negligible the district during the past year produced 15 pounds of copper ounces of gold and ounces of silver mason valley mines co all the ore produced in the district was treated in the mason valley mines company at thompson nevada the matte produced was for the greater part shipped to salt lake valley smelters shelters sm elters there have been installed in the two great falls type basic converters twelve feet in diameter this installation would be rated at about 2 million pounds of copper per month the blowing engine for this converter installation is a horsepower duplex nordberg the copper from converters will be poured into a ladle which will be set by crane into a tilting machine and then poured into a copper casting machine the copper slag will be handled in the same way the slag casting machine will deliver into a pound bin from which the slag mining engineer salt lake city will be loaded into railroad cars from which it will be placed in any part of the plant desired the has treated dry tons of ore this past year producing about pounds of copper the mason valley mines has shipped approximately tons of ore development work has been vigorously pushed diamond drilling has been done in the lower workings with I 1 understand excellent results other ores received at the mason valley came chiefly from around luning laming nevada and from the goldfield consolidated shipments will be received regularly from now on of sulphide ores from the balaklava Balak lala consolidated copper company and from the mountain copper company of shasta california nevada douglas copper co the nevada douglas copper company produced from its tons of ore shipped to the approximately pounds of copper during the year extensive exploration work has been carried on by means of diamond drills and churn drills the casting copper main mail shaft was j sunk to the foot level and considerable all development work done on all levels A large body of ele excellent ellent grade oxidized ore has been opened up in this section and has been proven for a vertical distance of feet ore is being shipped without sorting from aror from a this ore body smelter returns giving I 1 7 to 9 per cent copper on the foot level of the casting copper a body of sulphide ore has been encountered which as says from 3 to 5 per cent diamond drill f work has been done in this section with good res results alts during the year the ludwig main incline shaft three compartments js has been sunk a distance of feet stations were cut on the ath level and drifting done from same development work on cn this level indicates that at this depth the workings are still in the oxidized zone tn addition to the copper ore shipped shipments of gypsum amounted to tons which went to the coast and tons jf if li were shipped which went to the mason valley extensive tests have been made on the leaching of the nevada douglas ores and at the present time plans have been made for the erection of the first unit of a 1000 ton daily capacity plant bue blue stone mine this is the property of capt delamar this mine has produced no ore during the past year although it is well developed and fairly well equipped for production its experimental milling and concentrating plant has been enlarged to one complete unit of seventy five tons daily capacity although the mine contains a fair tonnage of carbonate ore the major portion of the deposit consists of a garnet limestone impregnated with and with small portions of secondary minerals it is the intention of the management to mine this ore by the glory hole method after the ore is crushed to about eight mesh it is roasted in a tower furnace in which it is given an oxidizing roast the ore is then placed in bins after cooling and is fed into a 26 inch four pole wetherill magnetic separator the middling products being retreated on an 18 inch two pole machine the final concentrates average 12 per cent in copper ninety per cent extraction is obtained concentrating between five and six into one mcconnell McCon nelI mines co the mcconnell McCon nelI has been a steady shipper producing tons during the past year although recently a good showing of sulphide has been encountered no pros pecking has been done on same to any extent some of these sulphides sulp hides taken out with development work were shipped to the and are a fair grade yerington malachite yerington malachite shipped early in the year 2350 tons of ore the latter part of this year an occasional car of ore has been shipped and prospecting has been carried on continuously montana yerington george wingfield had a lease on this property two thousand two hundred tons were re shipped lease principally from this the e winfield interests quit in october and I 1 understand it is now under option to the mason valley mines company empire nevada this property produced about 2900 tons this last year the bulk of the shipment being made by lessees lessels les sees and the ore taken practically from the surface outside of some diamond drilling by the gelder people this property has never been developed at depth it is rumored that this property is now bonded to the miami copper company at any rate it is being vigorously vigorous lv prospected with churn drills blue jay mine bonded to the gunn thompson people early in the year this property has been prospected extensively by them the main shaft was timbered re the and levels opened up and the foot level extended approximately feet this bond and option was thrown up recently and the owners will begin to make shipments at an early date new yerington copper co the company did about 1350 feet of development work during the past year considerable sid erable of which was done on the main tunnel and on the and foot levels total shipments for the year were five car loads averaging from 13 to 14 per cent yerington mountain copper co this company has had a small force of men employed during the entire year near the mouth of the main tunnel a shaft was sunk feet the main tunnel was extended feet and a crosscut cross cut was driven eastward from this main tunnel feet in this crosscut a vein of copper ore thirteen feet wide was encountered from good authority I 1 am led to believe that this thirteen feet of ore will average above 5 per cent in copper smith valley mines co this company has installed a new hoist and at the present time is installing a 60 horsepower gasoline engine and a 6 drill compressor one shipment was made during the year about ten men are employed on this property |