Investigation of metalliferous ores / S.F. Emmons -- The production of gold in the United States in 1904 / W. Lindgren -- The production of silver in the United States in 1904 / W. Lindgren -- The occurrence and distribution of tin / F.L. Hess and L.C. Graton -- The copper production of the United States / W.H. Weed -- Lead and zinc resources of the United States / H.F. Bain -- Iron and manganese ores of the United States / E.C. Eckel -- Slate investigations during 1904 / t. Nelson Dale -- The American cement industry / E.C. Eckel