Surface arrangements at reduction works : ; Ore dressing and milling ; Fine grinding ; Sampling ores ; Roasting and calcining ores ; Hyposulphite lixiviation ; The chlorination process.

Includes index.

Control and reduction of armaments : hearings before a subcommittee of the Committee on Foreign Relations, United States Senate, Eighty-fourth Congress, second session [-Eighty-fifth Congress, second session].

Includes index (pt.[18]).