H. E. Keyes

THE MEASUREMENT OF OVERVOLTAGE

H. V. Tartar, H. E. Keyes, 1922 .

Innovations in Copper Leaching Employing Ferric Sulphate-Sulphuric Acid

Harmon E. Keyes, H. E. Keyes, 1930 .

Precipitation of Lead and Copper from Solution on Sponge Iron

W. Sloan, H. E. Keyes, G. L. Oldright, 1928 .