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ASBESTOS MINE
COPPEROPOLIS, CALIF.
OCTOBER, 1963
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1.46 MEV.
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80 100 120 140 &O I80 200
CHANNEL NUMBER
Figure 3.
Field spectrum obtained over freshly exposed
serpentine at asbestos mine near Copperopolis, California,
This spectrum was accumulated in approximately one hour of
live time as opposed to the twenty minute live times for
the spectra of Figure 2,
—~ 31 -