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Electrothermic zinc

Addicks, Lawrence, 1878-
The Zinc Project

Addicks, Lawrence, 1878-
Electrolytic zinc

Addicks, Lawrence, 1878-
Zinc concentrates

Addicks, Lawrence, 1878-
Monthly newsletters

Addicks, Lawrence, 1878-
Oroya water supply

Addicks, Lawrence, 1878-
Copper import tax

Addicks, Lawrence, 1878-
Cerro-Chrome refining contracts

Addicks, Lawrence, 1878-
Copper sales policy

Addicks, Lawrence, 1878-
Sampling—Chrome refinery

Addicks, Lawrence, 1878-
Chrome sampling

Addicks, Lawrence, 1878-
Bismuth sales reports

Addicks, Lawrence, 1878-
Bismuth sales policy

Addicks, Lawrence, 1878-
European bismuth sales agreement

Addicks, Lawrence, 1878-
Calcium arsenate

Addicks, Lawrence, 1878-
Oroya stack losses and smoke damage

Addicks, Lawrence, 1878-
Zinc specifications

Addicks, Lawrence, 1878-
Sulphur recovery

Addicks, Lawrence, 1878-
Sponge iron

Addicks, Lawrence, 1878-
Silver refinery

Addicks, Lawrence, 1878-