Asbestos, mica, coal, coal oil and all the machinery for refining and storing it.

Displays for natural gas, petroleum; everything relating to lighting mines; safety lamps; oils; electricity; acetyline.

Most interestin' display in geology; all kinds of rocks; crystal; clay; ores; nickel and all the metals for making iron and steel and makin' 'em right there before you.
Explosives used in the Under World.

Everything relating to the workin' of salt mines; oil wells; metals, photographs; maps, illustrating how these riches of the earth wuz deposited, and all the machinery for collecting and making them useful to man.
And there wuz a place where we could see a miner's cabin, and miners at work, blasting, draining, driving tunnels, drilling, traveling underground.

A gold mill; a New Mexican turquoise mine; a lead, zinc and copper mine, all working there before us; and a coal mine discovered there on the Exposition grounds, an underground railway connected these two mines.