The Testing and Concentration of Lake Chelan Copper Ore

The geologic history of the Holden area and Lake Chelan district is an integral part of the history of the Cascade Mountain Range. The structure is very complex and the rocks, which have been subjected to intense metamorphic action, are portions of a roof pendant and consists of gneisses, schists and quartzites that are often difficult to correlate.

The Amplifier - v. 7, no. 15

In this issue...Camera Club, Magma, Hauser Lake, Newman Club, Montana Central Railway, Cal Strobel, blood donations, Peace Corps, Paul Harvey, Pan American Oil Company