EET
St. George, Utah
se
Lincoln Mine, Kev
Mesquite, Kev
4.0 x 1074
1.7 x 197)
l
3
1.5
1.0
Groom Mine, ev
3.4 x 107%
7
0.35
Hioche, Hev
2.0 x 10~
3
0.015
he method used in eatirating doses to the lungs is given im Appendix XK,
Ome
essurption made was uniform: distribution of radietion whieh, ef course, is not
entirely accurate,
The criteria previously established by an 4d Hoo Jangle Pearibility
Corsittes (kashington, 5.C., duly 13, 1951}, for air coneentrations was
“at a point of hunan habitation, the activity of radioactive
particles in the atmocphere, averaged over a peried of 24 hours,
shall be limited to 100 mlerocuries per cubic meter ef air
(correspending approxizately to a ground level gama intensity
of 3 xr/br).
DOE/NV.
"The <4-nour average radioactivity per cubic meter of air, due
to suspended particles having jiaseters in the range 0 ricron
to $.G microns, shall not exceed 1/100 of the above; nor is it
desirable that any individual particle in this sise range have
an activity greater than 10-< sicroouries calculated 4 hours
after the blast.”
In the January 20, 1954 meeting of the 4d Eoc Connittee the basie
for recoumending the above air concentratiom was ciscussed.
Eseentially,
these eriteria were selected by estimating the casa dose that night be
delivered by the pessing of a radioactive cloud.
‘ince there are better
55