✦ LIBER ✦

Mine timber in Pennsylvania coal mines

✍ Scribed by Harry E. Tufft

Publisher: Elsevier Science
Year: 1924
Tongue: English
Weight: 102 KB
Volume: 197
Category: Article
ISSN: 0016-0032
DOI: 10.1016/s0016-0032(24)90516-3

No coin nor oath required. For personal study only.

✦ Synopsis

PREVIOUS tests on bond clays by the bureau had determined that American clays can be used successfully in graphite crucible manufacture and service. The next step was to determine the value of American graphites as compared with the foreign. The final tests were carried out at the plant of the Detroit Lubricator Company, through the courtesy of Mr. G. B. Duffield. The crucibles, as previously, were made at the plant of the Vesuvius Crucible Company, Swissvale, Pennsylvania, from a formula compiled by the Bureau of Mines and under the supervision of bureau engineers. The results show that Alabama graphite bonded with the American clays gave superior service, a service at least equal to the commercial crucibles

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