01
The Possible production of low ash and sulphur coal in Illinois as shown by float-and-sink tests
The earliest high-confidence catalog date in this author overview is 1933.
Author
David Ray Mitchell
Born 1898
4 cataloged contributions
1933–1968 across 4 high-confidence dated works
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A considered starting point for reading David Ray Mitchell, drawn from catalog context and salon activity when available.
02
Washability characteristics of Illinois coal screenings
A clearly attributed work with a supported 1937 catalog date.
The catalog
Bibliography
4 works
Core ranking is using the catalog’s provisional quality order while the versioned ranking population is prepared.
Coal preparation
19432 cataloged editions
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1 cataloged edition
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With Joseph W. Leonard
2 cataloged editions
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1 cataloged edition
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