 | Geology - 1905 - 260 pages
...reach incipient fusion at a little over 1,900 degrees F., and should burn hard at a temperature of not over 2,000 degrees F. The Silurian clays here...bricks made of more refractory material. The clay from the 0. L. Searcy farm shows a distinctly higher percentage of silica, and a distinctly smaller per... | |
 | Kentucky Geological Survey - Geology - 1905 - 256 pages
...reach incipient fusion at a little over 1,900 degrees F., and should burn hard at a temperature of not over 2,000 degrees F. The Silurian clays here...bricks made of more refractory material. The clay from the CL Sea rev farm shows a distinctly higher percentage of silica, and a distinctly smaller per cent.... | |
 | Kentucky Geological Survey - Geology - 1906 - 420 pages
...have a sufficient percentage of fluxes to reach incipient fusion at a little over 1,900 degrees r., and should burn hard at a temperature not over 2,000...bricks made of more refractory material. The clay from the CL Searcy farm shows a distinctly higher percentage of silica, and a distinctly smaller per cent.... | |
 | Kentucky Geological Survey - Geology - 1906 - 420 pages
...have a sufficient percentage of fluxes to reach incipient fusion at a little over 1,900 degrees F., and should burn hard at a temperature not over 2,000...might be made out of these clays, but the color would he deep red and the brick would not b<> as hard as the pressed bricks made of more refractory material.... | |
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F., and should burn hard at a temperature of not over 2,000 degrees F. The Silurian clays here discussed have not been tested as yet as to their fusibility. It is probable that a good quality of pressed brick might be made out of these clays, but the... 