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The mill has treated 90,363 tons of ore in 332 days, which is an average of 272.17 per day. There were 27 days lost time, of which 50 per cent was due to delays, such as water shortage, ore shortage, or power interruptions. The running time efficiency was 91.72 per cent. The running time tonnage averages 296.75 tons per day.

The average gold heads were $1.93; average gold tails were $0.528; average gold extraction was 72.64 per cent. The average silver heads were $15.00; average silver extraction was 90 per cent. The total average heads was $16.93; total average tails were $2.02; total average extraction was 88.50 per cent. The recovery per ton was $14.91; total recovery on 90,363 tons, $1,347,312.33; average concentrate value was $307.29; tons of concentrates shipped 4,595.414; gross value of concentrates shipped $1,412,126.87; net value of concentrates shipped, $1,192,587.70. Cost of marketing 4,595.414 tons of concentrates was $219.539.17, or $47.77 per ton.

After payment of the dividends of September 4, 1922, the company had on hand a balance of $319,200.

Revenue from the smelter for ore and concentrates for the year was $1,881,944.84, to which is added bullion sold, interest earned, and sundry receipts, totaling $17,624.87, making a total revenue of $1,899,569.71.

Principal items of disbursement were:

Labor

Materials, supplies, power development, litigation, insurance
and incidentals
Taxes

$517,909.90

484,128.54 147,268.60

$1,149,307.04

The company paid in dividends to stockholders, including the September, 1923, dividend, $819,200 and had on hand September 4, 1923, a balance of $589,841.28, an increase of $270,641 over the balance at this time last year.

In the four years and two months of operation of the mine, there have been distributed in dividends as follows:

An initial dividend of 7 cents per share, forty-four regular dividends at two cents per share, and eleven extra dividends at 10 cents per share, making a total of $2.05 per share or $2,630,400.

San Diego County.

GEMS.

Himalaya Gem Mine, located in Sec. 17, T. 11 S., R. 2 E., near Mesa Grande, is being operated by Fred Rynerson of San Diego. The property was formerly operated by the Himalaya Mining Company of

New York. A pegmatite dike having a general north-westernly direction, occurs in a dark green gabbro. The average width of dike is about 4 feet. The tourmaline and other gem material occur imbedded in clay, in cavities and pockets in the coarse pegmatite dike. A new tunnel is being driven to cut the vein at a greater depth that was attained in the old workings and the present operator expects to open up important deposits of gem tourmaline with this deeper development.

A. B. C. Gem Mine, located in Sec. 8, T. 13 S., R. 2 E., near Ramona, is being developed by C. A. Seay, and L. B. Spalding of Ramona. It is reported that some new pink beryl deposits have been encountered. The gem material occurs in pegmatite dikes in granite. The mine has been worked at intervals since 1907, and is reported to have produced a large amount of pink beryl. The largest production came from what is known as the old Daggett stope, a narrow, irregular working, which followed the vein on its dip for something over 100 feet. Recently, a new shoot of gem-bearing clay has been found north of the Daggett stope.

GOLD.

North Star Mines, located in Sec. 31, T. 14 S., R. 5 E., in Deer Park Mining district, 7 miles northeast of Descanso, was recently purchased by Francis Gage and associates of Los Angeles, from J. H. Schook of Descanso. It is reported that the new owners will start active development work on the property, and also plan to install a 5-stamp mill. The ore is stated to have an average value of $25.00 per ton.

NICKEL.

Friday Copper Mine, consists of the following claims: Sterne, Copper Queen, Uncle Sam, Cobalt King, and Nickel King, located in Sec. 15, T. 13 S., R. 4 E., 4 miles south of Julian.

Elevation: 4400 feet.

Owner: Friday Copper Mining Company, Frank H. Brown, president; Becher Stern, secretary. Offices, American National Bank Building, San Diego.

The property has recently been taken over under lease and bond by Allen R. Partridge of Los Angeles.

On the surface, the outcrop of the vein is an iron gossan, consisting chiefly of limonite, striking east and west, with a width of 25 to 50 feet. The ore occurs near the contact of gabbro and schist and in places is enclosed in gabbro. The ore consists mainly of pyrrhotite, but contains pyrite, and an iron nickel sulphide, and is accompanied by small quantities of amphibole and calcite. Analysis of ore shows 4% nickel, 2% cobalt, and 6% arsenic.

Developments consist of shaft 175 feet deep, with two levels, one at a depth of 130 feet, the other at a depth of 175 feet. The ore body developed is 60 feet long by 20 feet in width.

The mine is being unwatered, and an extensive plan of development has been planned. Joseph Hartley, superintendent.

Bibl.: State Mineralogist Reports XIV, pp. 666-667; XVII, pp. 380-381. U. S. Geol. Survey Bull, 640 D.

OIL FIELD DEVELOPMENT OPERATIONS.

By R. D. BUSH, State Oil and Gas Supervisor.

FEATURES OF 1923 PRODUCTION.

California again broke all previous records in its production of petroleum by producing 263,729,000 barrels in 1923. This is about 36 per cent of the amount produced in the entire United States, and almost double the amount produced by California in 1922, which was a record year. This great increase was due to the intensive and rapid development of the Huntington Beach, Santa Fe Springs and Long Beach fields, where initial productions of nearly all the wells were large. These three fields produced 69.4 per cent of the State's production in 1923. This tremendous production taxed the storage capacity and marketing facilities of the large companies, and caused new markets for California crude oil to be opened. About 92,000,000 barrels of crude was in storage at the end of 1923, as compared with 61,380,000 barrels at the beginning of the year, and notwithstanding about 54,455,000 barrels was shipped through the Panama Canal to eastern refineries.

During September, 1923, production reached its maximum, and then declined, this decline continuing to the end of the year, in spite of the fact that production was resumed in some of the San Joaquin Valley fields where it had been shut in. In December, 1923, for the first time since December, 1920, storage decreased, or, in other words, consumption, which includes oil shipped to eastern ports through the Panama Canal, was greater than the December production, which averaged daily 706,000 barrels. The indicated consumption of oil increased during the year from 451,613 barrels in December, 1922, to 711,459 barrels in December, 1923.

There were three reductions in the price of oil in 1923: the first reduction was made on January 6, when all grades, including 20 degrees Baumé, and above, were reduced, the highest gravity (35 degrees and above) being reduced 53 cents. The next reduction, on April 10, for the refinable oils, amounted to 41 cents for the highest grade. The third reduction, amounting to 18 cents on the highest grade, was made on October 9. Fuel oil, or the grades below 20 degrees Baumé, remained stationary during the year.

A total of 1400 new wells was started in 1923, as compared with 1439 in 1922. During the year, 980 producing wells were completed.

At the close of the year with the Santa Fe Springs, Huntington Beach and Long Beach fields almost completely developed, activity in the Los Angeles Basin centered in Torrance field, but this field does not give promise of being as prolific, or of developing as rapidly, as the above mentioned fields, since most of the acreage is held in comparatively large leases by the larger companies. Activity is also gradually increasing in the older fields of the San Joaquin Valley, and the outlook for the petroleum industry for the year 1924 looks bright at the present time. The year started out with an increase in the price of all grades of oil amounting to 25 cents, effective January 22, and the prospect of additional increases during the year is good.

From September 8, 1923, to and including December 29, 1923, the following new wells were reported as ready to drill:

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