Pulsifer, H. B., “Important Factors in Blast Roasting.”
_Met. and Chem. Eng._, 1912, vol. x., No. 3, March,
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Editorial Correspondence, “Sinter-Roasting with Dwight-Lloyd
Machines at Salida, Col.” _Ibid._, 1912, vol. x., No. 2,
Feb., p. 87.
Dwight, A. S., “Efficiency in Ore-Roasting.” _School of
Mines Quarterly_, 1911, vol. xxxiii., No. 1, Nov., pp. 1–17.