RT null T1 Challenges for the coal-using energy sector in South Africa and neighbouring nations – efficiency and emissions control options A1 IEA Clean Coal Centre, K1 mercury K1 mercury contamination YR 2017 FD 2017 LK https://wedocs.unep.org/handle/20.500.11822/22224 UL https://wedocs.unep.org/handle/20.500.11822/22224 NO Draft report produced as a discussion piece for the Workshop on Efficiency and Emissions, Mpumalanga, South Africa, 28th February, using grant funding from the US Department of State DS UN Environment Document Repository RD Sep 22, 2026