Table 4 Hazardous waste to unknown handling 1999 to 2006, by material. 1 000 tonnes

4 Hazardous waste to unknown handling 1999 to 2006, by material. 1 000 tonnes¹
Type of material	1999	2000	2001	2002	2003	2004	2005	2006


Total	58	60	47	56	104	106	89	88
Waste containing oil	43	47	33	42	39	46	35	36
Waste containing solvents	4	3	3	4	0	1	1	0
Other organic hazardous wastes	4	4	4	3	41	37	36	30
Waste containing heavy metals	4	5	5	5	8	8	6	7
Corrosive waste	0	0	0	0	0	0	0	0
Other inorganic hazardous wastes	1	1	1	0	10	9	8	9
Contaminated wastewater	0	0	0	0	0	0	0	0
Photochemicals	1	1	1	2	1	2	2	3
Nonclassified hazardous waste	0	0	0	0	4	2	2	3

¹	Amendments in legislation entering into force 01.01.2003 define additionally some waste types as hazardous. In 2003 about 57 000 tonnes of such waste types were handled in unknown ways.
Source: Statistics Norway (2007).