2007-03-08 04:32:56 · 5 answers · asked by curiousdns 1 in Science & Mathematics ➔ Earth Sciences & Geology
granite, flagstone, marble
2007-03-08 05:24:31 · answer #1 · answered by tropical 4 · 1⤊ 0⤋
Virtually any rock can be mined by quarrying (open pit or strip), or by deep mining (under the surface). The ones listed above are good answers, but far from a complete list.
I am surprised no one mentioned coal. Although the term "quarrying" is not used with coal, coal is more associated with "strip mining", but the mining process is nearly the same.
The key is what can you quarry and make money selling? Limestone aggregate will sell for more in coastal areas where it does not exist, than in an area full of limestone valleys.
Economics, my friend, economics..........
2007-03-08 10:49:31 · answer #2 · answered by Tom-PG 4 · 0⤊ 0⤋
Limestone.
The largest limestone quarry in the world is in Thornton, IL (just south of Chicago)
2007-03-08 06:13:10 · answer #3 · answered by Anonymous · 1⤊ 0⤋
Any rock product like
Slate
Granite
Marble
Onyx
Limestone
Gravel
Sand
The list goes on and on
2007-03-08 06:42:12 · answer #4 · answered by bob shark 7 · 1⤊ 0⤋
quartz
gold
silver
nickel
copper
2007-03-08 04:37:38 · answer #5 · answered by LM 5 · 1⤊ 0⤋