Table 1.

Comparison of Natural and depleted uranium isotops

Nuclide	Half-life (years)	Natural Uranium		Depleted Uranium
		weigh percent	Activity [kBq/g]	weigh percent	Activity [kBq/g]
238U	4.47 × 109	99.27	12.4	99.75	12.4
235 U	7.04 × 108	0.72	12.4	0.25	2.26
234 U	2.45 × 105	0.005	0.6	0.005	0.16
Total activity		25.4		14.8