576 -
time necessary to map fractures greatly reduced on
either satellite or low-level aerial photographs, but
accuracy is increased, and, perhaps of equal importance,
figured contracts often show a 100-fold reduction in
initial exploration costs. I therefore suspect that
the use of such instrumentation by photo-interpreters
searching for economic deposits will increase markedly
in the coming years.
ACKNOWLEDGMENTS
My appreciation is expressed to the various compa
nies who allowed release of the image enhancements used
in this paper.