Description of Geophysical Log Hole Types

Hole Types:

        A     Access
        B     Rad Chem
        C     Core
        D     Waterway Experiment Station (WES)
        E     Exploratory
        F     Tunnel
        G     Auger, Crack Investigation
        H     Emplacement
              HA or HB centerpunch emplacement
        I     Instrument
        J     PINEX and LOS (Line-Of-Site)
        K     Escape
        L     Cable
        M     Hydrologic Test Well
        N     Tracer and Sample; Foil Recovery
        O     Tunnel Dynamics
        P     Post Shot
        Q     Seismic High Explosive
        R     Re-entry (R-S Re-entry shaft)
        S     Shaft (W/S Whipstocked hole)
        T     Test Hole (many types)
        U     Post Shot in crater
        V     Vent
        W     Water
        X     Pre-Post Shot
        Y     Abandoned
        Z     Waste Storage
        1     Rack Assembly
        2     Dump Hole
        3     Oil Well
        4     Gas Well
        5     Geothermal Well
        ?     Unknown Hole Type


Multiple uses of the hole are indicated by consecutively adding hole type
abbreviations in this field. If the hole is closely associated with another 
hole, or if it is also known by another name, this is indicated by /_____.

For example:

    U 2 BT   H E/U2BU H   

means that U2BT was initially an emplacement hole that became an exploratory
hole. U2bt is also an exploratory hole for the nearby emplacement hole U2bu.