Browsing Bulletins - Indiana Geol. Survey by Author "McGregor, Duncan J."

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  • McGregor, Duncan J. (Indiana Geological Survey, 1958-12)
    Limestone that is chemically suitable and easily accessible for cement manufacture can be found at many places in Indiana in the Mississippian limestones and to a more limited extent in the Devonian limestones. Clay, shale, ...
  • McGregor, Duncan J. (Indiana Geological Survey, 1963)
    High-Calcium limestone and dolomite suitable for industrial use exist in Indiana. Selected measured stratigraphic sections and chemical and spectrographic analyses are used to evaluate high-Calcium limestone and dolomite. ...

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