Year	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010*	Total
Contaminated Iron and Steel	1	3	8	1	4	2	2	3	5	32	2	2	5	81
Radioactive Sources (Check Sources, etc.)	1	2	4	0	4	3	2	2	4	7	2	3	0	37
Naturally Occurring Radioactive Materials(NORM)	10	13	28	20	23	24	25	29	50	77	82	85	5	480
Total	12	18	40	21	31	29	29	34	59	116	86	90	10	598