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To: Jack Hydrazine
Even if that rock is an 8 on the Mohs scale?

Elaborate, please. I'm unfamiliar with the Mohs scale.

119 posted on 12/26/2013 8:54:48 PM PST by Windflier (To anger a conservative, tell him a lie. To anger a liberal, tell him the truth.)
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To: Windflier

Igneous rock on the Mohs scale of mineral hardness runs between 6 and 8. I don’t know what the cutting teeth on Bertha are designed to cut through.

More info here.
http://en.wikipedia.org/wiki/Mohs_scale_of_mineral_hardness


121 posted on 12/26/2013 8:57:50 PM PST by Jack Hydrazine (Pubbies = national collectivists; Dems = international collectivists; me = independent conservative)
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