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Show COPPER PORPHYRIES MAKE A RECORD. What are known as the porphyry coppers are making a great record. Ten years ago the "porphyries" were almost unknown. Now they are ranking rank-ing with the biggest producers of copper. cop-per. During September, these mines, known as the "Jackling properties," yielded 42,000,000 pounds of copper, or at the rate of 500,000,000 pounds a year. Of this great total, Utah Copper Is to be credited with 245,000,-000 245,000,-000 pounds, and Utah Copper, fifteen years ago, was a mountain of waste material which went unnoticed. on |