Arizona silver belt., 1893-10-07
THn oLp poMINIoN ooppnR co.
Mine and Shelter Globes Hive of In-
 dustry.


 dustry,
 The BELT scribe visited the Old Dc
 minion Copper Company's works ol . Wednesday and was courteously re
 ceived and shown about by Superin
 tendent N S. Berray. The smeltinl , plant is a model of convenience anC s efficiency for the reduction of the ores ! and under the supervision of Johr Murphy, head-smelter the furnaces are running smoothly and producing the usual amount of copper, whicl could be largely increased, if it were not for the restriction placed upon the company by the agreement with other producers.
 We were much interested in au i'm provcment, recently applied to the furnaces, and the invention of Mir. Murphy, consisting of an auxiliary wind,box enoiroling the crucible, The air from the blower pipe, upon enter ing the auxiliary wind-box, makes the circuit twice before entering the fur mace, which serves to raise the temper ature of the air about 90 degrees, and 1 effects a saving of fuel amounting Co five pounds on every charge or over $50 pounds of coke per day. With coke at ? cents per pound, it repre- sent5 a saving of about $500 per month, from which the importance of the inn movement can be readily appreciated. Mir, Murphy has applied for a patent on his invention.
 The product of two furnaces one 60-ton capacity is now about l6 tons per day
 Theelble tramway Bleiohort patent delivers about i2O tons of ore and 20 tons of lime per day, and has n capaoi- ty of about 25O tons daily It has proven highly satisfactory aue has more than paid for itself by the saving made in transporting the ore from the mine to shelter since it began to run, in January 1892 The cost of deliver ing ore by the bucket tramway to the shelter is only 9 cents per ton, where as the lowest rate, when hauled hv wagon, was about 10 cents Although in almost constant use for noarb two years the trImway shows no apprecia- Die wear, and will likely run several years longeE without any expensive repairs being needed.
 Altar viewing the surface works. we were invited by Supt. Berray to % down into the mine, We stapoel on the cage with some trepidation, ana were lowered through the seemingly abysmal darkness to the 7th level. Not having been in the mine for many months what impressed us most was JEo vast growth of the tunnels, cross cuts, etc, which seemed inJormiuable. The second level tunnel, now being rapidly pushed toward the northeast eru limit of the company's ground. Will soon be a half mile tong. The pra-b2uie5 on the seventh level are looking wen the ore is of a good grade, and new ground is being contin- i uEly opened up From the seventh. We went up to tho second level and in55 the big tlpe, which is l5J feet wid2, although it's dimensions are not realized, because as rapidly as the ore Is stoPsd tic space ia filled in with . waste. The ore on the second is rich ! though steaked with barren rock. | Most of the ore that goes te the smel- ! ter is from the second and fifth, al. . though other levels show up well.
 It struck us Goroibly that the Old i Dominion Copper Company's affairs arc admirably conducted and reflect credit on Superintendent Barray and those under him. The mine never looked better and the fact chat the company is able to continue orcrations with tho depression now existing in .he copper industry, is certainly re- assuring