Table 3. (Continued) Estimated! ? Mean + S.E. 7 Isotope Strata 2354 1 0.000462 + 0.000028 2 0.000462 + 0.000028 £7eT 238y 235, 4 238, (grams/m ) Natural Uranium Estimated Inventory + S.E. (grams) 58.1 + 3.5 3.57 + 0.22 0.22 + 0.013 3 0.000462 + 0.000028 Total 0.000462 + 0.000028 1 0.0645 + 0.000377 8,100 2 0.0645 + 0.000377 498 3 0.0645 + 0.000377 Total 0.0645 + 0.000377 8,630 1 0.0650 + 0.000378 8,160 2 0.0650 + 0.000378 501 3 0,0650 + 0.000378 Total 0.0650 + 0.000378 61.9 30.6 30.9 8,690 + Estimated 95% C.L. on Inventory Lower (grams) 50.5 3.09 0.19 Upper 65.7 Uranium From Safety-Shot Device Est imated Inventory + S. (grams) Percent Inventory in Strata Estimated 95% C.L. on Inventory Lower (grams) Upper 120 + 88 12.2 -70 310 4.05 331] + 130 33.7 50 612 0.25 532 + 225 54.1 24 1,040 983 + 274 100.0 395 1,570 1,370 + 1,140 3.5 54.3 69.5 + 47,3 8,000 &,200 71.4 ~1,090 3,830 492 504 236 + 65 12.3 96 376 30 31 313 + 118 16.3 46 580 + 47.4 8,530 8,730 1,920 + 1,150 100.0 -564 4,400 + 47.5 8,060 8,260 1,490 + 1,160 51.4 -1,040 4,020 495 507 569 + 184 19.6 168 970 30 31 B45 + 342 29.1 56 1,630 8,590 8,790 2,900 + 1,220 100.1 240 5,600 + 2.9 + 0.18 + 2.9 + 0.18 + 47.6 tr = coefficient of variation ++ Estimated using data from the 10 samples (2, 92cm increments) of profile 3, stratum 1, A site. The x + S.E. atom perc 5 t 2354) for these samples Atom percent of natural U is 0.720. More data is needed to confirm these estimates of natural 3 U was 0.720 + 0.0064. ttt Preliminary estimates. About 50% of results are reported.