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Map showing relative ease of excavation in the Salina quadrangle, Utah Map showing relative ease of excavation in the Salina quadrangle, Utah
This map shows the relative ease (or difficulty) with which rocks and surficial deposits can be excavated. Because of rapidly changing technology of excavation and considerable local variability of many rock units, it is not practical to specifically categorize rock units according to type of equipment needed for their excavations. However, it may be stated in general that rock units...