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Old 12-21-2014, 07:55 PM   #10 (permalink)
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The earth's volume is about 268,000,000,000 cubic miles, about 1 200 millionth of that volume is recovered petroleum, enough to cover the surface to a depth of 4/10s of one inch.

regards
mech

Last edited by user removed; 12-21-2014 at 08:03 PM..
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