Table of Contents
(cont'd)
ILLUSTRATIONS
Figure l.
The HASL pressurized ionization chamber
and y spectrometer set up for a typical
measurement.
Saratoga Springs, N.Y.,
1963....29
Figure 2.
Two typical field spectra obtained during
Figure 3.
Field spectrum obtained over freshly exposed
late 1962....... sce eee eeeee cece ee eee ee ee 30
serpentine at asbestos mine near Copperopolis,
California... .....c ee vccoee ce cect ewe twee ewes 31
Figure 4,
Fresh serpentine exposure at asbestos mine
near Copperopolis,
California.............. 22232
iv