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3  Petroleum is optically active — that is, it is able to rotate the plane of polarized
                light.
            4  When  crew  members  are  ready  to  add  the  joint  to  the  drill  string  as  the  hole
                deepens, they add it from the mousehole.
            5  The inorganic theory of the origin of petroleum makes it necessary for the oil and
                gas to have migrated great distances to be found in the places they now occupy.














































































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