Browsing Reports of Progress - Indiana Geol. Survey by Author "Murray, Haydn H."

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  • Murray, Haydn H.; Smith, John M. (Indiana Geological Survey, 1958-10)
    Laboratory tests show that some Indiana shales are potential sources of manufactured lightweight aggregate. Bloating, the process by which lightweight aggregates are manufactured, is caused by various constituents acting ...
  • Murray, Haydn H. (Indiana Department of Conservation, 1957)
    Laboratory tests show that five underclays from western and southwestern Indiana are potential sources of bonding clay for foundries. Green and dry strength tests were dteremined for each sample, obtained from a commercially ...
  • Murray, Haydn H.; Patton, John B. (Indiana Department of Conservation, 1953)
    In the past few years, largely because of increased freight rates, a keen interest in finding sources of high-silica sand has developed. The Geological Survey has received many inquiries about possible sources of ...

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