Chapter 2—-The Nuclear Testing Program © 21
Figure 2-4—Locations of Tunnel Tests in Rainier and Aqueduct Mesas
Aqueduct
Mesa
Ui2p
\
U12t
Topographic edge
—
of Mesa
Ny °t/
Ut2an
Rainier
Mesa
U12b
U12e
@ Test 'ocation
Tunnels
1000 —
0. -————_——>
3900
U12g
SOURCE: Modified from Defense Nuciear Agency.
ANNOUNCEMENTOF
NUCLEAR TESTS
ently reported only in the general categories of eithe
The existence of each nuclear test conducted prior
to the signing of the LTBT on August 5, 1963, has
been declassified. Many tests conducted since the
pre-announcedin the afternoon 2 daysbefore the tes
if it is determined that the maximum credible yiel:
is such that it could result in perceptible groun
announced. Information concerning those tests is
classified. The yields of announced tests are pres-
material or if any late-time release results i
Signing of the LTBT, however, have not been
less than 20 kilotons, or 20 to 150 kilotons. Th:
DOE’s announcementpolicy is that a test will b:
motion in Las Vegas. The test will be post ar
nounced if there is a prompt release of radioacuv