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Table 1.
Region
eU*
(p.p.m.)
New Hampshire
1. Manchester
2, Concord
3. Franklin
4, Conway
Vermont
Fitchburg Granite
Binary Granite
Littleton Formation
Conway Granite
2. Middlebury
8. Bennington
4. Burlington
Beldens Formation
Glacial Drift
Monkton Formation
1.
|
Bedrock
Rutland
Dunham Dolomite
Mean OUTDOOR y-KADIATION LEVELS
Hr. /h
%
23
26
23
45
2:5
29
24
3-6
15
LT?
1-4
2-1
5
26
15
5
9
11
3-2
3-3
Q4
pr. /h
1:9
1-9
1-4
p.p.m.
er/h
11
1:2
1-2
1-7
15
1:6
1:6
2-2
a4
4:3
3:5
5:6
1:0
13
20
0-8
1-0
1:0
1:1
1:3
1:3
2-6
2-2
18
Th
Natural y
p.D.m,
av./h
0-4
11-9
0-7
15-6
7-0
a4
71
10:9
5-6
5-6
7-2
6-1
6-0
6-6
6:5
52
| Fall-out |
eU
(p.p.m.} |
@2
il
9-4
14:3
¥
erfh
2-2
2-2
18
27
74
23
8-7
8:6
6-8
2-0
20
a4
* Mean bedrock radioactivity as estimated by Billings‘,
ip
Table 2. MEAN WEEKLY DOSES IN MR./WEEK
Geological category
aU (p.p.m.)
Outdoor
Natural +
Outdoor
Total y*
Cosmic
Dunham Dolomite
Beldens Formation
5
5
0-94
Lil
1:34
1-43
Monkton Formation
Fitchburg Granite
Littleton Formation
Binary Granite
Conway Granite
11
23
23
26
45
0-87
1:18
1:19
1:41
1:83
1:27
1°52
1:63
1-78
2-27
Glacial Drift
9
1-09
* Includes fall-out, averaged over all locations within an area,
+ Obtained as indicated in the text; in units of air dose rate.
1:43
Mean population exposure
1962
Natural
Dosimeters
0-62
0:60
1:69
1:74
1:37
1-49
2-97
2-86
0°59
0-60
0-61
0-60
0-61
1:61
1:82
1-91
2:05
2-43
1-29
1-54
1:56
1-73
2-07
2-70
3-13
2:97
8-21
3-67
0-62
1-76
1:49
|
3-01
i