.MTI2NQ.MTAwOTk2

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Randolph & [?] exhibit Copper & brass tubing etc Mr. Maynard in charge

Cambria Iron Co. Johnstown Chicago Iron works

Iowa exhibit - stone, coal & minerals - "Coal production for 1892 - 7 000,000 tons" Fossil marble at one time was a sponge & filled up with silica. light brown. Mantel made of it Zinc specimen of stone. limestone etc. from Des Moines Model of coal mine with mines & pickaxe & a car loaded coming out of mine

Colorado ex - fine specimens of stone & [?] silver ore columns of stone - sandstone etc. Gunnison & Platte [?] granite columns

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