RELATIVE Sr CONCENTRATIONS IN SURFACE AIR
617
tory (NRL). Up until that time, the program, underthedirection of
Luther B. Lockhart, Jr., had provided one of the most consistent and
useful studies of the concentrations and relations of fission products
and natural radionuclides in ground-level air. Since taking over the
program, HASL has broadened the geographical coverage somewhat by
the addition of a number of sampling stations. Figure 1 shows the loca-
tions of all the current sites in the ground-level-air program. On the
80th meridian we have added New York City, Westwood, N. J., and
Pedro Aguerre Cerda in Antarctica. Other U.S. sites that have been
added are Palo Alto, Calif., Seattle, Wash., Appleton, Wisc., Oklahoma
City, Okla., and Chattanooga, Tenn.
BRR me ete ee
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«
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»
»
«
«
«
.
«
«
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«
-
THULE
MOOSONEE
NEW YORK AND WESTWOOD
STERLING
MIAMI
SEATTLE
PALO ALTO
APPLETON
OKLAHOMA CITY
CHATTANOOGA
MAUNA LOA
SAN JUAN
MIRAFLORES
GUAYAQUIL
LIMA
CHACALTAYA
ANTOFAGASTA
SANTIAGO
PUERTO MONTT
PUNTA ARENAS
PEDRO AGUERRE CERDA
2)
Fig. 1—Ground-level air-sampling sites.