Bisbee daily review., 1910-09-21
SURFACE WORK TAKES MUCH
 TIME AT MIAMI

GLOBE Sept. 2o.-Although the Miami Copper company Is now exper- fencing lull in mining development, made such phenomenal progress in the past that very little more work remains to be done before production is begun. In the meantime, the work of completing the construction of the concentrator and the auxiliary powerhouse is being rushed to the end that treatment of ere may be commenced by Jan. i. 131n. Barring any delay that cannot te foreseen all the necessary equipment will be in stalled in readiness for ore extrac. ton by the first of the year and the huge plant will then begin concen- trating from 1000 to 1.500 tons O. ore every twenty-four hours, the plan of the management being to gradual. ly increase production to 200o tons, the full capacity of the concentrators at the present time. Other units sufficient to give the mill a daily capacity of 5000 tons can be quickly added to the mill when necessary. however. as the foundations therefor have already been built in anticipa- ton of a future increase in produc' ton The concentratcr is no prac- ticaIly finished except for the install. lation of additional equipment and the powerhouse building is done ex- cept for laying the remainder of the floor and putting on the roof Much of the machinery for this plant, also, is on it's foundations.
 Underground at the Miami prop erty a small force of men is at work on and above the 420-foot level where a number of the haaiage drifts tributary to the main one are being completed. The work previously un- derway on the main haulage drift on the 570-foot level was discontinued about ten days ago and will probably not be resumed for a long time as the need of this drift will not be apparent in the near future The company has only seven machine drills in operation at the mine and the entire force of men engaged in tramways will probably not exceed auxiliary building pipe lines and work outside of the construction of the concentrator and it's external 200 men.
 The extraction of ore will be com. menced on the 370-foot level and from there upward. The first ore to be taken out of the mine will come from the vicinity of shaft No. 2. Two raises are now being put up from the main haulage level 420 feet from the surface to the large dump at the main shaft commonly called the Red Rock, or No. 4. Through these raises the ore in the dump amounting to about 250 900 tons, will be shot down to the haulage level and hoisted directly from there through the main shaft to the con certrator ore bins.
 The Miami Copper company is now operating three churn drills on its property These drills are sinking holes Nos. 19. 20 21 on the Pinto Captain and St. Johns Fraction claims. The idea being worked ou by thd mensigemerlt in the churn drilling at present is to set definite limits to the main ore body, and fol zhis purpose, holes are tgeing put down around the outer edges of tho irregular mass of ore developed and hlodked out by the underground workings. In some cases this drill ing is bringing to light ore reserves not previously known to exist. The management. however. is averse to making public the detailed results oi the drill work until it can be suff ciently correlated to give a compre hensive idea of what has been ac compIished by this kind of pros pecting.