67 Sample dpm/10°r,3 VIIL Surface Air Concentration Air filter samples provided by Mr. I. H. Blifford, Naval Research Laboratory, Washington, D. C. A. Air filters, Washington, D, 0. 1. CL 915-P:, Collected June 2-3, 1955, volume 1.65 x 10°f2, total dpm 22) +12, 2. OL 916-P:, Collected June 8-10, 1955, volume 3017 x .106ft3, total dpm 66% 5, 3. CL 1052-P: Six small filters, collected February 23-28, 1955, 0.258 x 10°F) total 135 +7 2.22 2hl, * 29 air volume, B, Air filters, Kodiak, Alaska le C. CL 938-P: Collected August 16-23, 1954 ~hely x 10683, , , ~33 Air filters, Pearl Harbor, T, H. le CL 1053-Ps: Fifteen small filters, collected January 1-20, 195), 0.645 x 103 total air 34.0 * 45 volume. 2. CL 105u-P: Ten small filters, collected January 21-31, 1954, 0.43 x 10°Ftotal air 51.9 * 6.0 volume. 3e CL 1055«P: Twelve small filtegs, collected 12.6 2 he8 le CL 1056-P: Twelve small filters, gollected 25-4 * 3.8 February 1-1, 1954, 0652 x 10°Ftotal air volume. February 15-28, 1954, 0.52 x 10°f3 total air volume.