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Collection: Newspapers > Nevada City Nugget

May 29, 1931 (6 pages)

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CE iad Ledge Ry yO a t nn ey AES ' PAGE FOUR MINING PRACTICE AT -VALEDON NEW MEXICO Mining methods of the BightyFive mines of the Calumet and ‘Arizona Mining Co., near Valedon, N. Mex., are discused in an information circular just by the United States Bureau of Mines, Department of Commerce, written by Ralph B. Youtz. A production of 7,000 to 8,000 tons per month of siliceous coppergold-silver ore is mined from steep veins occuring in igneous country rocks, chiefly granodiorite. Ore shoote are presistent, and veins, wanging from 2 to 100 feet wide, average 5 feet in width, usually with commercial rather than structural limits. In the upper levels both walls and vein filling are hard and firm, and will stand open indefinitely, but . below the 1,350 level more intense mineralization of the walls has taken place, requiring cut-and-fill methods in some place. Experience has shown the ore to be so uniformly continuous that the only exploratory work now procticed consists in the routine opening up of deeper levels, with some extra crosscutting and raising near the ends of the vein. Reserves are estimated in 100-foot blocks on the basis of channel samples, with proper’allowances for horses of waste, dilution, and discrepancies between mine and smelter assays. The mine is developed in the usual way by vertical shafts (two for operating use), drifts, crosscuts, and has included studies of all the other factors involved, such as increasing population, number of operating vehicles, mileage per car, gasoline consumption, etc. : ‘Causes of accidents are given considerable space and are analyzed in considerable detail. Factors tending to cause accidents, such as slippery pavements, foggy weather, mechanical defects, etc., are given consideration. “It is our hope that wide and immediate use of the information set down in the phamphlet may be made to the end that a better underStanding of the causes of accidents may help decrease them,” Killick said. Copies of the phamphlet may be obtained by writing to the Bureau of Statistics of the California Highway’ Patrol located at Sacramento. 0. IDLE PROPERTY TO RESUME OPRATIONS JAMESTOWN, Calif., May 27.— The Arbone property, near Tuttletown, idle fro the last 20 years, has taken ;oveqf by W .E. Campbell, from Cassius Sewer , of Tuttletown, and preparations for the resumption of operations are under way. It has a 600-foot incline shaf; on a three to four foot vein with laterials at the 1000 200 and 400 foot depths, on which ore varying value has been exposed in past operations, Dr. R. I. Bromley and Leanord Leape of Sonora have franted E. T. Preble of Los Angles a lease and bond on the Bromley property about three miles north of James town. Surface development work has exraises. Developed, drilling and blast-! Posed a network of veins of varying ing, and shaft-sinking details are well treated. An interesting feature of the latter is the use of key-board blocking, which has proven superior to stull-blocking in shaft timbering. Shrinkage has always been the most important stoping method at this property. Inclined cut-and-fill stopes'are restored to where the walls are very week, where the vein is wide but contains horses or brands of waste, of where high-grade ore oecure in narrow veins. All ore is hand sorted from surface Picking belt. Shrinking stoping is usually done in connection with drift-back timbering although in wide veins or where the ore immediately above the drift is of marginal grade, pillars may be left. These pillars are usually recoverable on completion of the stope from below, if their frade warFants. In firm ground cribbed manWays are carried through the broken ore between stopes. This necessitates special drawing procedure to prevent crushing of the manways by runs of ere occasioned by unequal drawing on the two sides. In heavier or faulted ground, small pillars are left to protee; the manways, with dog-holes broken through to the stope at about 35-foot intervals. Where foot-wall drifts have been driven stopes are carried direct to the level above; otherwise the floor pillar may be recovered later. Ore remaining in stopes as drift-back pillars or cones be.tween shutes is pulled through the stopes below. Present extraction is close to 100 per cent, although considerable waste from the walls must be sorted out. : Cut-and-fill stoping is treated in detail. Pumping is an importast item some 450 gallons per minute being raised in severa) lifts. Ventilation has become a Problem in the bottom level, where the mine water bas a temperature of 104° F. An underground Jabor is on a cntract basis, Total mining cest in August, 1930, was $4.49 per wet ton with a Pproduction of 1.45 wet tons per man-shift. In two typical shrinkage and two cut-and-fill stopes, stoping costs were $1.23 and $1.75, and $2.46 and $2.37 per ton, respective}. Details are given fully in Information Circular 6413, “Mining Methods at the Eighty-Five Mines, Calvme; and Arizona Mining Co., Valedon, N. Mex.,”’ which may be procured free of charge from the United States Bureau of Mines, Department of Commerce, Washington, D. C. TO PUBLISH MOTOR Publication of the first complete set of statistics on motor vehicle accidents ever issued since the formation of the California Highway Patrol was announced today by Victor W. Killick, departmental statistician. THhe pamphlet will be assembled for use of the general public as well]. as all students of traffic accident problems. ‘ Believing, however, that the traffic accident problem can be better understood thereby, Killick sgh te widths and values on the property, it is stated. Roy H. Rushing, of Jamestown, has advanced a tunnel 125 feet on his lease covering a large block of ground of the App ranch, two miles. south of Jamestown. He is driving to tap an ancient river channel believed to have been the source of placer gold mined in adjacent gulches in the early days, according to located in the Rainier National Forest, Washington, comprises 24,300 acres of forest land extending onehalf -mile on either side” of the Natches Pass Highway for a distance of 5 miles. The outstanding scenic and inspirational function of this. memorial area will be safeguarded by the Forest Service. 0. NOTICE From now on the Colfax Bakery will supply their products to the Sacramento Street Grocery, Nevada City, California. ANGELINI CICOGNI, Prop.Eureka mine has a 2,700-foot threeTHE NEVADA CITY NUGGET, CALIF ORNIA a {— FRIDAY, MAY 29, 1931YELLOW ASTER MINE TO START DEVELOPMENT SAN ANDREAS, Calif., May 28— The Gledick Mines Corporation, a Los Angles concern, has acquired, under lease and bond, from J. C. McDonald, the Yellow Aster mine on the Calaveras County side of the Mokelume River, five miles north of West Point, and inaugurated operations, under the supervision of Hi: R. Derrer, Los Angles mining man. A 500-foot drift tunnel, extended in the early days, is being continued on about a two-foot face of ore assaying, it is stated, $40 a ton in gold. At a point about 150 feet from the portal of the tunnel a raise has been started on 10 inches of ore which is said to average $1440 a ton in gold. The property is equiped with a three stamp mill. woon Morris and associates of Los Angies, who are operating several placer gravel properties in Tuolumue County ,have extended their investigation to Calaveras County. They have taken under leose and bond from W. H. Luddy and A. L. Wyllie six parcels of placer gravel ground approximating 844 acres, about three miles southwest of San Andreas. Testing operations are soon to be started, it is stated. J. S. Cademortari, of Sonora, will supervise the ‘work. The Red Hill group of five claims, on the Calaveras County side of the Stanislaus River ,one mile east of; Melones( has been taken over under lease and bond, from T. H. MaeArdle, of Sonora, by W. A. Snider and V. V. Gee, of Long Beach, CalifPast Surface operations have resulted in the exposure of several promising showings, it is stated. GERMAN INTERESTS MAY BUY EUREKA HOLDINGS SUTTER CREEK, Cal., May 27— An unofficial rumor is current to the [ nepotaiiad for the purchase from San Francisco owners of the controlling stock interest of the South Eureka Mining Company, the property of which extends along the main segment of the Mother Lode, near this town, for about half mile, with the Central Eureka mine adjoining it on the north and the Kennedy mine on the south. Offical confrima-' tion of the report is unobtainable, at least at present. Partically idle
for more than a decade, the South gives a vertical depth of 2,470 feet, about half that of the Kennedy property, the deepest gold mine in the United States. Because of its location and early production, mining men familiar with the Mother Lode have long considered the South Eureka as possessing unusual potentialities at greater depth. With the completion of the installation of all necessary machinery and the erection of a 50-foot head frame, opérations of the RusselKent Mining CGorporation of Delaware on the Courtwright 450-acre property, three miles west of Jackson, have reached a stage permitting of rapid sinking of the _ vertical shaft, now down 25 feet and being broken three-compartment size. The company, an incorporated partnership of five. New York and Boston business men, has recently increased present 23 men. The project, financed by private funds, is the most ambititous mining, undertaking launched along the Mother Lode in Amador County in recent years. It is ‘being watched with keen interest by the mining fraternity, espically on account of the west of the main segment of the great vein system. A depth of 1,200 feet is the present objective of the management, with the first ‘level at the 300-foot point. 0. ADDED LAD NEEDS_ MORE AIR PRESSURE When a car is used for carrying more than a full: pasenger load the air pressure of the tires should be increased proportionately, advises the Free Emergency Road Service of the California State Automobile Association. ‘ the remoteness of the operation to'. FRED M. MILLE CONSULTING ENGINEER CIVIL AND MINING ENGINEERING REGISTERED CIVIL ENGINEER LICENSED SURVEYOR Hydraulics — Irrigation — Surveys Land Classification. LAST OFFICIAL MAP OF NEVADA COUNTY ; Hydraulics — Irrigation — Surveys Office at Residence — Grass Valley, 262 Auburn Street. LR ug take" your washday cares re) NATIONAL HOTEL AND COFFEE SHOP GOOD AIR GOOD WATER Meals and Rooms that will " please Elevation 2250 Feet Let Us Serve You Broad Street Nevada Cit“ THE ROSE LEE BEAUTY SHOPPE Hair Dressing and Beauty Work. Famous Adele Miller Toilet Articles. . . LOUISE MARTIN FINE WATCH REPAIRING RADIO SERVICE AND REPAIR CLARENCE R. GRAY . ; 520 Coyote St. Phone 15 ei Work Called for and Deliveres. GRASS VALLEY STEAM LAUNDRY 111 Bennett St. Grass Valley STAGE TIMETABLE Graniteville Stage leaves Nevada City at 7 a. m., for Lake City, North Bloomfield, Moores Flat,. and Graniteville. Leaves Graniteville at 7 a. m., for Nevada City. Alleghany Stage teaves Nevade City daily, except Sunday at 1:00 p m., for Tyler, Columbia Hill, Alle ghany and Forest. Leaves Forest at 6:30 a. m., for Nevada City. Marysville Auto Stage. eaves ai 8.00 a. m., for Rough and Ready. Smartsville, Hammonton and Marysville. Leaves Marysville at 1:00 p m. Connects at Smartsville for North San Juan. Downieville Auto Stage leaver Nevada City daily at 1 p. m., ar Leaves Downieville daily at 6 a. m., arriving in Nevada City in time to connect with 10:30 train for San Francisco. Washington Stage leaves Nevada City at 6:30 a. m., for Washington Leaves Washington at 6:30 a. m. for Nevada City. —— mS BOT LS SD EO Re Oo F c ALt ¥ O BN iA ee a. 3 S uppose you couldnt get 7 of te g LARGEST OIL COMPANIES in California are served by Bank of America “ar AIXTX ins IMAGINE : Every motor vehicle in California stop ped dead for want of fuel. It would not happen, of course. But it does illustrate how everyone depends on gasoline. California motorists, in 1930, used one billion, three hundred million gallons. In production, refining arid distribution, the pe:ro’eurm industry employs an estimated 300,000 people throughout the state. Such widespread operations enable the major oil companies to make extensive use of the statewide service of chis Baal. With 200 separate Bank of America accounts in 147 communities, these com panies collect thousands of small checks quickly; transfer funds with minimum delay and expense ; obtain accurate ee and appraisals from widelyy separated localities ; simpli their accounting and effect other economies which mean improved service to motorists. The Bank also serves approximately 75,000 individual depositors in the industry—any one transferred to another territory. In promptly forward funds — and of whom may be ago this event, the Bank will even valuables in safe deposit — to any branch; and with a letter of introduction, “the customer quickly feels at home. “* Bank of America is organized to give complete, convenient service to any business man — to any family — to you. k of Amatoe National Trust & Savings Association Ke EDDIE LEONG Fresh Fruits and Vegetables FRESH FISH All Kinds of Mellons Free Delivery JOY IN EVERY BITE Every mother knows how childish appetites long for ‘‘something good.”’ Satisfy that longing, put a happy light in the eyes of your children with plenty of the most wholesome food—PATSY BREAD. Order your supply from the Grocer today KOPP'S BAKERY Nevada City, Calif. Patronize Home Industry, LEITER’S RADIOSHOP . HOLBROOK REFRIGERATOR Lowest Priced Refrigerator on the market. Complete in if your home at $207.50. less extras. Demonstration given at our place of business. We welcome you at all times. We also carry Atwater Kent and Clarion Radios. We demonstrate in: your home. Phone 286 . than you have ever seen. fact everything you need Hardware. Grass Valley FIR-TEX SUPER-INSULATION Defies Heat—Cold—Noise The new building Board 4 inch thick. All 4 feet in width; length: 6, 7, 8, 9, 10, 12 feet. Do not overlook this wonderful wall board; something different SIMPLY WONDERFUL Now our New Year's Stock arriving in car loads daily. Paint and Oils of all kinds and colors. Corrugate Gale Steel Sheets, Lime, Plaster, Brick, Doors and Windows galore. All kinds Cedar Shingles, Composition Roofing and Shingles in all the attractive colors. New stock of Flooring, Ceiling, Rustics, in for your new home. Remodeling or repair wood: Our delivery service is the best. Don’t overlook our complete line of House THE DIAMOND MATCH CO. California TS acceptable. Write to : M. M. 419 Security Bldg. CAPITAL FOR MINES ‘Eastern Capital properly secured is always the quickest and most satisfactory method to finance mines. Advertising by proper co-operation secures the Eastern contracts. Only $3.00 secures all the service of widespread publicity including 50-word advertisement and a place in gold exhibits to be shown in Eastern Cities, backed by the salesmanship of experts. No stock selling schemes Publicity Manager . SMYTHE Los Angeles ———— et i ape —— TF ETE 72 Oe ee