RT null T1 Reducing mercury exposures and transitioning miners away from mercury use YR 2011 FD 2011 LK https://wedocs.unep.org/handle/20.500.11822/12778 UL https://wedocs.unep.org/handle/20.500.11822/12778 NO https://www.unep.org/chemicalsandwaste/Portals/9/Mercury/Documents/ASGM/Nigeria/Presentations/Tech%20session/Haji_Rehani_Reducing%20emissions%20&Transitioning%20from%20mercury.pdf DS UN Environment Document Repository RD Sep 19, 2026