122 CONTRIBUTIONS TO ECONOMIC GEOLOGY, 1902. [bull. 213. 
containing so high a percentage of this valuable metal. A recent 
proposal of the American Smelting and Refining Company in the 
Jordan Valley to treat zinc ore from southern Utah, the present 
remodeling of the Anchor mill, and the recent thorough equipment of 
the custom zinc plant of Park City, afford Bingham owners a further 
opportunity to attempt to save their zinc values. 
Even without either this additional saving or the discovery of new 
ore bodies, the present condition of the camp is promising. Unless 
the price of copper falls sufficiently to necessitate the suspension of 
mining operations, the fact that the United States Mining C'ompan^ 
has begun regular heavy shipments from the ore shoots which have 
been developed in their properties during the last few years; that 
valuable additional shoots of pay ore have recently been discovered 
in the Utah Consolidated property; that a valuable shoot of sulphide 
copper ore of pa} 7 grade has been proved in the Boston Consolidated 
ground; that the work of opening and developing the consolidated 
mines on the cast slope of the range, acquired by the Bingham Gold 
and Copper Company, is well advanced; and that extensive bodies of 
high-grade lead-silver ore have recently been discovered in the Com- 
mercial and Ashland properties, assure a strong consistent increase 
in the output from Bingham in the immediate future. Furthermore, 
although the camp has been rather thoroughly prospected, it is rea- 
sonable to expect that future exploration will reveal (1) new shoots of 
valuable copper-sulphide ore in the few stretches of the great lime- 
stones which remain unexplored, (2) pay lodes of the Silver Sheald 
type in fissures in t lie quartzite and porphyry about the upper portion 
of Bingham Canyon, and (3) new lead-silver bodies of the Montezunia- 
Ben Butler-Erie type in fractured or fissured zones in or adjacent to 
the calcareous carbonaceous shales of the upper series lying north- 
west of Bingham Canyon and Carr Fork. 
