| http://www.w3.org/ns/prov#value | - This Convention, signed by more than 85 countries, includes Annexes that prohibit the dumping of mercury, cadmium and other substances such as DDT and PCBs, solid wastes and persistent plastics, oil, high-level radioactive wastes, and chemical and biological warfare agents; and requires special permits for other heavy metals, cyanides and fluorides, and medium- and low-level radioactive wastes.</p
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