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Now showing items 21-30 of 57

Milling Cerro ores

Addicks, Lawrence, 1878-

Copper specifications

Addicks, Lawrence, 1878-

Zinc concentrates

Addicks, Lawrence, 1878-

Selenium

Addicks, Lawrence, 1878-

Copper import tax

Addicks, Lawrence, 1878-

Electrolytic lead refinery—Colcord Report

Addicks, Lawrence, 1878-

Indium

Addicks, Lawrence, 1878-

Report #357103. Sampling Oroya Copper

Addicks, Lawrence, 1878-

Chrome sampling

Addicks, Lawrence, 1878-

Morococha Lake mud

Addicks, Lawrence, 1878-

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