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<dl><dd>"An outline of laboratory experiments performed on a commercial scale in the mining laboratory of the University of Illinois with a view of developing a simple process for the economic recovery of the pyrite (sulphur)."</dd>
<dd>With : High speed tool steels. Urbana, Ill. : University of Illinois, Engineering Experiment Station, 1905. Bound together subsequent to publication</dd></dl><br>Subjects: Pyrites; Coal mines and mining</div>
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Holbrook, Elmer A. (Elmer Allen), 1881-1957</div>
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