Daily Arizona silver belt., 1910-04-17
Old Dominion Working to Capacity of Present Hoist
 ing Equipment
FOUR FURNACES FOR
 PORTION OF MONTH
Copper Production for This Month Will Equal That
 of Previous Month

The underground workings of the Old Dominion mine are being extended as rapidly as is possible with the present hoisting facilities. Both the A and B shafts are in use, but the present hoist ing capacity does not permit extraction to be made on as large scale as would be possible with larger hoist in com mission at the A shaft. It is prob able however that the new hoist whic h has been ordered to replace the one de- stroyed last December will be in use by the middle of June or July lst at the latest. In the meantime several out lying claims are being developed fur ther and the ore from these workings contributes to the smelter supply.
 During the past month two extra blast furnaces have been blown in sev- eral times and have been kept running few days at time to handle surplus as the necessity arose, but the manage ment does not contemplate running four furnaces steadily in the near future. Two furnaces, are in operation at pres ent. Some custom ore is also received, CHlCnN llOnl NhO pulNiiVi " i'pot'i emu Gibson mines. The average daily pro duction of the Old Dominion mine is abut 700 tons and the copper produc- ton for this month will probably be at least as great as that of the month of March, provided, of course, that the present rate of production continues throughout April. The mining of the high grade ore body recently encoun- tered on the thirteenth level of the mine is raising the copper percentage of the ore somewhat so that for the same tonnage the metal product will considerably exceed that ordinarily ob- tained from the ore treated at the smell ter.
 The various shafts on the Keystone, Transit, Buckeye and other claims of the Old Dominion company are being worked by electric power furnished by the power plant at the shelter. The use of electricity in this way greatly capacities and lessens the expense of hoisting ore and waste and makes it possible to pursue development rap idly. Much of the outlying property will probably be worked under lease, in case it proves productive, but the ore will be added to the Old Dominion shelter supply and should help mater ially in the steady maintenance of a third furnace in operation The amount of ore shipped to the shelter will doubt less be further increased by the install lation of the new hoist at A shaft so that the latter part of the sumner should be period of renewed activ- ity for the company's plant in case the management desires to increase the output,
 The present working force of the Old Dominion company is probably less than at any time for several years past. Less than 800 men are now em- ployed and of this number less than 800 are employed in underground work.
 The installation of pumps on the twelfth and sixteenth levels of the mine insures the control of the water, as the total pumping capacity is about four times that required for handling the present supply. The water raised from the workings daily amounts to less than 3,000,000 gallons, 2,S00,000 gallons be- ing about the amount raised every twen- ty-four hours at present and at time during the past few months has the flow of water exceeded this amount Notwithstanding the increased extent of the underground workings the vol ume of water is less than at was a year ago.