 ... value. Each is found in a particular geological zone, and rarely or very sparingly elsewhere. Only within certain districts would search for a given substance be successful; outside of these areas no amount of prospecting would ever disclose the material...  Reports - Page 14by Missouri. Bureau of Geology and Mines - 1896Full view - About this book
 | Missouri. Division of Geological Survey and Water Resources - 1891 - 188 pages
...disclose the material sought. In obtaining information concerning each particular mineral sabstance, the entire subject must be carefully considered. At...containing it is of prime importance. The localities where each occurs require description ; the arrangement, relations and extent of the deposits must be defined;... | |
 | Missouri. Division of Geological Survey and Water Resources - 1891 - 776 pages
...amount of prospecting would ever disclose the material sought. In obtaining information concerning each particular mineral substance, the entire subject must be carefully considered. At the outset a clear undecstanding of the geological structure of the rocks containing it is of prime importance. The localities... | |
 | Missouri.Bureau of Geology and Mines - 1895 - 72 pages
...amount of prospecting would ever disclose the material sought. In obtaining information concerning each particular mineral substance, the entire subject must...containing it is of prime importance. The localities where each occurs require description ; the arrangement, relations and extent of the deposits must be defined;... | |
 | Iowa Geological Survey - 1918 - 916 pages
...amount of prospecting would ever disclose the material sought. In obtaining information concerning each particular mineral substance, the entire subject must...containing it is of prime importance. The localities where each occurs require description; the arrangement, relations and extent of the deposits must be defined... | |
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