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This collection consists of written descriptions of lithologies encountered during the drilling phase of various coal exploration programs in Tennessee. Descriptions range from detailed to brief. Information obtained primarily from diamond core drilling with additional information from rotary drilling and e-logs. Drill hole depths range from tens to thousands of feet deep. Individual drill holes were originally located by using the Tennessee State Plane Coordinate System (NAD 27). Quadrangles with abundant drill holes have accompanying drill hole location maps.


    map background search result map search result map Collection of Coal Exploration Logs from Tennessee Collection of Coal Exploration Logs from Tennessee