Lithology Codes
Down Hole Types
HB      Hard Brown
HSB     Hard/Soft Brown
SB      Soft Brown
SY      Soft Yellow
CLB     Clayish Brown
Basement Types
CLY     Clayish Yellow
BC      Brown Clay
YC      Yellow Clay
WC      White Clay
Lithology Comments
(End of Hole)
DOL     Dolerite
ROD     Broken Rod
WET     Wet
GR      Granite
SLTST	Siltstone