Arizona republican., 1899-06-11
This is a Substantial Modern and
 We'll Equipped Plant.
OTHER ADJOINING CLAIMS
Signs of Activity Manifest tn All Directions and in a Few Years Work Now in Hand VIII Show Wonderous Change i0 inc Silver RradShawS and Buck horns.

| Briggs, Ariz, June 9.-(Special cor
 respondence of The Republican. J.
 About four and half miles north of
 Briggs is the Crown Point mine,
 owned by Colonel Alex. o. Brodie and
 H. s. Van Buren. Colonel Brodie is
 superintendent MT. John Hanion as
 sistant superintendent. J. D. Clarke
 Large millman
 The property comprises four patent
 Silver King, Yankee Boy and Yankee
 Girl. and the outcrop or the ledge,
 clearly traceable for a distance of
 close upon a mile, runs through the
 entire length of these claims. The
 main workings are at the intersection
 of the Yankee Boy and Yankee Girl,
 the main shaft being on the former
 and the 200 feet winze on the lattef
 claim. This main shaft is down 800 feet in the vein and the winze is con- nected with the shaft at the 200-foot level. Upwards of 1900 feet of devel- cpment work has been done. The mine underground is in first rate shape, the ledge averaging about five feet between the walls. and there are now between 1.5OO and 1000 tons of ore on the dunn at the mill.
 The character of the ore from the grass roots down to water leve,-2O0 feet4has been a mixture of free ores and sulphides, but below water level the ore contains less sulphides and is becoming more oxidized, free quartz with iron, carbonates and chromates Of lead being its chief constituents, and this state of things continues to the greatest depth at present attained 100 feet below water level Free gold is visible in almost any specimen of these ores taken at random from the dump. It is both a plating and con- centrating proposition, the major DOT tion of the values being, however, ". The mill and plant generally is of the most modern and substantial construc- tion and comprises the latest. best and most effective appliances that mining science can devise and money can buy.
 In the engine house, which is a ca pacicns building with lots of floor and head room, are three tubular boilers Of 15O horse power indicated, a sev- enty-tWo horse power horizontal mill engine designed to run at 150 revolu- tlcns per minute with sixty-inch pulley and heater, injector, etc, etc; in fact, all the appliances of a first class, up to date plant. In the mill house is a Fraser & Chalmers ten stamp mill with 1,0S0 pound stamps, the battery having a five inch drop, 100 to the minute. The foundations 3f the battery are of Oregon pine, the mill is equipped with Canda's patent cam fastener, and the entire structure is complete and modern in every re- spect with hydrometic sizer, Challenge feeder, and a Blake crusher weighing -3, 300 pounds with a capacity of crush ing during the day shift enough ore to supply a twenty-stamp mill for twen- .y-four hours.
 The plates are 15x5 feet each and the plant includes three 'ix-foOt Frue vanners arranged to run It 3 speed of IF, 1S7 and 19S reYolu- ions per minute. The boilers provide steam for the mill, the hoist and the pumps with margin to cover the fur her power required in the enlarge nent of the mill by another ten stamps. which will 10 doubt be re- luired in no great length of time, and provision has been made in every re- pect for this addition to the mill The uel used will be oil brought from Les Angeles, and Colonel Brodie tells me hat he estimates the use of oil as
 galnst coal will effect saving of ST
 day and with other economies rem cred possible by the use of the liquid uel the saving will amount to not less han SIP per day.
 There are two tanks at the mill hay 1g a capacity of 5000 gallons and two lore in course of construction which i'll increase the water storage to 12,- % gallons. A tram line of 175 feet onneets the shaft with the grizzly, nd the whole plant, as before stated, ; most substantial, well designed and ltOgether a right good example of lodern and first rate mining appli- nces erected in a manner that, re-