Up: Cole: A drill-bit source
I would like to thank Unocal and the Japan National
Oil Corporation (JNOC) for making the
240 channel geophone array available for this study.
I would also like to thank Phil Johnston
of Unocal for his
help in arranging the recording, and Leonid
Vanyan for his fine work in helping plan
and carry out the experiment.
Stanford Exploration Project