RT null T1 Guidelines for the preparation for permanent storage of metallic mercury above ground or in underground mines A1 Euro Chlor, K1 mercury YR 2007 FD 2007 LK https://wedocs.unep.org/handle/20.500.11822/12234 UL https://wedocs.unep.org/handle/20.500.11822/12234 NO Guidelines for the preparation for permanent storage of metallic mercury above ground or in underground mines NO https://www.unep.org/chemicalsandwaste/Portals/9/Mercury/Chloralkali/WCC-publications/Env%20Prot%2019%20Edition%201.pdf DS UN Environment Document Repository RD Sep 18, 2026