Lead Smelting and Refining, With Some Notes on Lead Mining

by Unknown

[47] Engineering News, Nov 30, 1899, and U. S. Patent No. 665,250, Jan. 1 1901.

[48] A discussion of the paper of Henry W. Edwards, on “Concrete in Mining and Metallurgical Engineering,” Transactions of the American Institute of Mining Engineers, XXXV.

[49] Abstract from the Journal of the Chemical, Metallurgical and Mining Society of South Africa, May, 1903.

[50] Abstract of a paper in Transactions American Institute of Mining Engineers, XXXIV (1904), p. 175.

[51] Silver not given. This was the case, also, with the gold in the bullion. The slimes contained 0.131 per cent. of gold, or 39.1 oz. per ton.

[52] A constituent company of the American Smelting and Refining Company.

[53] Translated from Zeit. f. Berg.-Hütten.-und Salinenwesen im preuss. Staate, 1905, LIII, p. 433.

[54] Abstract from a paper in Zeit. f. Berg.-Hütten-und Salinenwesen im preuss. Staate, 1905, LIII, p. 439.

[55] Translated from Zeit. f. Berg.-Hütten.-und Salinenwesen im preuss. Staate, 1905, LIII, 490.

[56] Abstract from a paper in Zeit. f. Berg.-Hütten-und Salinenwesen im preuss. Staate, 1905, p. 400.