Home2003 Treaties and Agreements ...Multilateral (12966) – Protocol to the 1979 Convention on Long-Range Transboundary Air Pollution on Heavy Metals hide Multilateral (12966) – Protocol to the 1979 Convention on Long-Range Transboundary Air Pollution on Heavy Metals TIAS Office of Treaty Affairs December 29, 2003 Pollution: Long-Range Transboundary Air Pollution on Heavy Metals Protocol done at Aarhus June 24, 1998; Entered into force December 29, 2003. With annexes. Download attachment [2 MB] Tags Multilateral Pollution Treaties