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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-
Oroya research

Addicks, Lawrence, 1878-
Oroya blister quality

Addicks, Lawrence, 1878-
New silver refinery

Addicks, Lawrence, 1878-
Morococha Lake mud

Addicks, Lawrence, 1878-
Milling Cerro ores

Addicks, Lawrence, 1878-
Metallurgical reports

Addicks, Lawrence, 1878-
Metal losses

Addicks, Lawrence, 1878-
Lead peroxide

Addicks, Lawrence, 1878-
Lead concentrates

Addicks, Lawrence, 1878-
Lead chloride

Addicks, Lawrence, 1878-