ACKNOWLEDGMENTS
The authors want to acknowledge the support of D. Wireman, of REECo, for
arranging to have the samples taken and shipped to our laboratory.
They
further want to acknowledge the advice of R. J. Reinhart and the help
with scanning the slides by M. Datzman, both of LFE Environmental.
They
are also grateful for the support and encouragement of M. G. White, of
NV.
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