Commercial leonardite definition

Commercial leonardite means a dark-colored, soft, earthy organic rock formed from the oxidation of lignite coal, and is produced from a mine that has as its only function for supply for purposes other than gasification or combustion to generate electricity.
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Commercial leonardite means a dark-colored, soft, earthy organic rock formed from
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Commercial leonardite means a dark-colored, soft, earthy rock formed from the
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More Definitions of Commercial leonardite

Commercial leonardite means a dark-colored, soft, earthy rock formed from the oxidation of lignite coal, and is produced from a mine that has as
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