Type of log data with a three digit code prefix: all descriptions are preceded by "1", all logs by "2". e.g., outcrop = 102; coal test = 216
I. Description
01 roadcut
02 outcrop
03 underground
04 surface mine
05 prospect pit
*1) 06 measured section (multiple point locations) A-Z top to bottom
07 mine mouth
*2) 08 composite section
09 company mine map
*1) See "Measured Section" description for details
*2) "Composite section": represents a derived stratigraphic section from a variety of sources, e.g. several different publications, field notes, etc.
II. Log
01 core
02 drill hole
03 rotary
04 drillers log
05 electric
06 geophysical
07 gamma (natural)
08 density (gamma-gamma)
09 neutron (activation)
10 resistivity
11 spontaneous potential
12 sonic
13 laterolog
14 seismic
15 caliper
16 coal test
17 oil and gas
18 water well
19 soil test
20 power line hole
21 pump hole
22 ventilation shaft
23 gamma & neutron
24 gamma & density
25 rotary * core
30 multiple: if more than one type of log in vertical sequence, list string of abbrev. in point_comment_tx field. See also explanation for Unit Qualifire for "L".
31 combination: for combination of types for the entire log enter string of codes in point_comment_tx field.