...content of the ore, the silver being apparently associated with the zinc rather than with the lead. in nearly all the deep mines. It is only near Fredericktown...several plants in other parts of the district, and in some instances has been a source of income. The lead ore of southeast Missouri carries a small proportion...

...small quantity, though irregularly. It is only near Fredericktown, that the copper, cobalt, and nickel content of the ore has been the object of mining,...concentrate of these metals has been recovered as a middling product at several plants in other parts of the district. In 1916, 2,878 tons of copper concentrates...

...with the lead. Copper, nickel, and cobalt also occur in the ore, in greater quantity in the vicinty of Fredericktown, and in small quantity, irregularly,...several plants in other parts of the district, and in some instances has been a source of income. The lead deposits of southeastern Missouri have been...

...shipped in 1915 by the Federal Lead Co. Copper, nickel, and cobalt also occur in the ore, in great quantity in the vicinity of Fredericktown, and in...tons of copper concentrates were shipped in 1915. These copper concentrates, from which 382,700 pounds of copper were recovered, were from the Federal,...

...small quantity, though irregularly. It is only near Fredericktown, that the copper, cobalt, and nickel content of the ore has been the object of mining,...concentrate of these metals has been recovered as a middling product at several plants in other parts of the district. In 1916, 2,878 tons of copper concentrates...

...with the zinc rather than with the lead. Copper, nickel, and cobalt also occur in the ore, in greater quantity in the vicinity of Fredericktown, and in...several plants in other parts of the district, and in some instances has been a source of income. The lead ore of southeast Missouri carries a small proportion...

...with the Lemotte sandstone or some distance above it. In the lead concentrates zinc ranges from 1 to 5 or more. In the maximum proportions mentioned the...3,115 tons of copper concentrates were shipped in 1915 and 2,878 tons in 1916. These copper concentrates, from which 368,000 pounds of copper were recovered-...

...disseminated lead ore, the ore from one shaft being reported to run occaSILVER, COPPER, LEAD, AND ZINC IN MISSOURI. sionally as high as 2 per cent of zinc for...tons of copper concentrates were shipped in 1915, 2.878 tons in 1916, 2,304 tons in 1917, and a much larger quantity in 1918, as the Missouri Cobalt...

...Fredericktown and in small quantity irregularly in nearly all deep mines. It is only near Fredcricktown that the copper, nickel, and cobalt content of the...at several plants in other parts of the district. In the disseminated-ore district the production increased rapidly after 1869 and is estimated by Buckley...

...deep mines. It is only near Frederi.cktown that the copper, nickel, MINERAL hrfSOURCES, 1927 PART I and cobalt content of the ore has been the object...at several plants in other parts of the district. In the disseminated-ore district the production increased rapidly after 1869 and is estimated by Buckley...