5 wee 7 dy NODS CA ed ae an i ae J . Table 1. MpaAN OUTDOOR y-RaDIATION LEVELS *t 7 a we 75 ra Region ” a “ ‘6 , New Hampshire 1. Manchester a Bedrock . 2, Concord 3. Franklin 4, Conway Vermont 1. Rutland 2. Middlebury - | . 3, Bennington 4. Burlington eU* (p.p.m.)} Fitchburg Granite 23 Binary Granite Littleton Formation Conway Granite 26 23 45 Dunham Dolomite Beldens Formation 5 5 Glacial Drift 9 Monkton Formation 11 ar./h EK 2-5 4 pr./h U r iv, + ) p.p.m, er. /h h * _Pie = p.p.m. uy fe v 4 Naturat'y en/h 1-5 1:7 1:4 2-1 1-1 LS a4 4-3 35 56 11-9 0-7 15:6 8-4 71 10-9 111 o-4 14:3 9:2 22 2-6 3-2 1:5 1-9 1:0 08 1:3 1-1 2-0 2'6 56 7-2 5-6 6-6 74 8-7 2-3 2-0 24 1-4 10 13 18 5-0 5-2 6-8 24° 33 1:9 1:0 16 1-6 2-2 1-3 22 7-0 Y ar./h 29 2-4 3-6 1:2 1:2 1-7 ord eU (p.p.m.) | ~ Fallout | 61 6-5 86 22 18 27 2-0 * Mean bedrock radioactivity as estimated by Billings‘. e ‘ wa vo Table 2, MEAN WEEKLY Doses IN MR./WEEK Geological category Dunham Dolomite Beldens Formation Glacial Drift . - Monkton Formation Fitchburg Granite Littleton Formation Binary Granite Conway Granite eU (p.p.m.) | Mean population exposure i ; Natural Dosimeters Outdoor Natural » Outdoor Total y»* Cosmic 5 0-04 1:34 0-62 1-69 1:37 2-97 9 1:09 1-48 Q-62 1-76 1-49 3-01 5 11 23 23 26 45 1:11 0-87 1:18 1:19 1:41 1:83 * Includes fall-out, averaged overall locations within an area. t Obtained as indicated in the text: in unita of air dose rate. 1-43 ' 1:27 1°52 1:63 1:78 2:27 0-60 0-59 0-60 0-61 0-60 0-61 | 19627 1:74 161 1:82 1-91 2°05 2:43 1-49 | 1:29 1-54 1:56 1:73 2-07 286 2-70 3-13 2:97 3:21 3:67 | |