3. National Lead Co.; St. Louis Smelting & Refining Co.; United Lead Co.
4. The Rockefeller-Ryan group, comprising the International Smelting Co.—Tooele smelter, Utah; and the International Lead Refining Co.,—refinery at East Chicago, Ind.
5. The United States Smelting, Refining & Mining Co. group, comprising the United States Smelting Co.—Mid vale smelter, Utah; U. S. Metals Refining Co.,—electrolytic lead refinery at Grasselli, Ind.; Needles Mining & Smelting Co.,—zinc-lead custom concentrator at Needles, Calif.; Bingham Mines Co. and other mines in Utah (Bullion, Beck, Champion, Utah-Apex, Centennial-Eureka and Tintic); Sunnyside and Gold Prince mines at Silverton, Colorado, and formerly a half interest in International Metals Selling Co.; and the Leadville Unit.
6. The Day group, comprising the Northport Smelting & Refining Co.; Pennsylvania Smelting & Refining Co.; Hercules Mining Co.; Tamarack & Custer Mining Co.; and the Amazon-Manhattan mines et al.
7. The American Metal Co. group, controlling the Ohio & Colorado Smelting Co. (owning 65 per cent. of its stock), and the Balbach Smelting & Refining Co. (owning one-third of its capital stock and selling the entire output).
8. Hayden-Stone-Clark-Coolidge group, comprising the American Zinc, Lead & Smelting Co.; American Zinc Co. of Tennessee; American Zinc. Co of Wisconsin; American Zinc Co. of Illinois; Granby Mining & Smelting Co. of Missouri; and the Butte & Superior Mining Co.
9. The Eagle-Picher group, comprising the Eagle-Picher Lead Co., Joplin, Mo. with smelter at Joplin, Mo., and controlling the Galena Smelting & Manufacturing Co., Galena, Kan.; and the Webb City Smelting & Manufacturing Co., Webb City, Mo.
10. The Bunker Hill & Sullivan Mining & Concentrating Co., controlled by Bradley-Crocker interests, and probably representing a certain proportion of English capital.
11. The Desloge Consolidated Lead Co., which formerly operated its own smelter but now has its ores smelted on toll by the Federal Lead Co. and markets its own lead.
All of the above companies are owned and controlled by American citizens so far as known, except certain interests in the American Metal Co. and perhaps the Bunker Hill & Sullivan Mining & Concentrating Co.