Bisbee daily review., 1904-06-09
Interesting Descrip-
 TON OF THE MINE OF
 The Globe District
REBUILDING OF THE OLD DoMiN ION IS THE MOST IMPORTANT EVENT IN HISTORY OF
 GLOBE.
Camp Has Been Conspicuous in the Years Past as the Only Important One Utilizing Oxide Ores Exclusive iy and Turning Out Its Product in Form of Copper Bars Made by Sin. gle Fusion.

The rebuilding of the Old Dominion smelter in the most important event in tn erecent history of the Globe dis trict. With the adoption of mating and converting in the place of oxide smelling. it assures a greater economy in the recent history of the Globe dis it should enlarge the scope of the mining industry generally, inasmuch as the stores of sulphide ere, hereto fore neglected, will become available for treatment Commenting the En- gineering and Mining Journal:
 For a number of years past Globe has been lcdnspicuous as the only Important camp in the Southwest which utilized oxide ores exclusively and turned out its product in the form of copper bars made by a single fus- ion The United Verde mines be- gan the treatment of sluphides early in their career At Bisbee the Cop per Queen installed converters in 1894, and three years later the Arizona and Detroit companies at Clifton were producing copper by the Bessemer process. The Old Dominion. how ever continued making black copper form oxides down 10 1902, course that has naturally restricted mining development throughout the district. With expensive fuel-a poor grade of coke costing S10 or more a ton-and heavy loss of copper in the slags, due to the silicious character of the ore 1t is evident, alsa. that this method of sme,ting was burdened with great disadvantages.
 The Old Dominion is one of the representative mines of Arizona. il has a record during the twenty years of it's intermittent activity, of over 120,000, 900 pounds of copper. and there is promise of long period ahead. The ore bodies that have been worked are both large and high grade. In the last two years of operation. when treating oxides alone, the average ten or of the furnace charge was nearly eight per cent copper, although the burden included 45 per cent lean iron ore as Aux. There is still a good supply of high-grade ore in the mine and a much larger quantity of uals- ial developed during the exploration of the rich oxides that can be made available by concentration
 The principal ore zone as exposed in the Old Dominion workings occur along a displacement that strikes southeast and southwest and has a steep dip southeast The hanging wall consists of limestones and quartzitas which are assigned by Ransome to the early Paleozic. while the footwall is piabase of more recent origin The faulting seems to have occurred both before and after the in- base. Most of the ore so far has been taken from the region of the hanging wall. where it occurs 1T rudely lenticular bodies lying nearly parallel to the bedding of the enclosing limestones and quart zites. The ore especially favcrs the contacts between the different rocks, though not infrequently it is surround ed completely by limestones- One of the largest lenses that has been found was opened on the second level along the bedding plane separating she hmAstpnes and the underlying guartzite; it is said to have measured 200 feet in length, 100 feet in widen, with a thickness of sixty feet
 The oxlde ores, which until recent ly were alone exploited, consist most