References.

Peters, E. D., “Principles of Copper Smelting.”

Offerhaus, C., “Modern Reverberatory Smelting of Copper Ores.” Eng. and Min. Journ., June 13, 1908, pp. 1189–1193; June 20, 1908, pp. 1234–1236.

Ricketts, L. D., “Experiments in Reverberatory Practice at Cananea, Mexico,” and discussion, Trans. Inst. Min. and Met., vol. xix., 1909–10, pp. 147–185.

Ricketts, L. D., “Developments of Cananea Practice.” Engineering and Mining Journal, Oct. 7th, 1911, p. 693.