East and Southern Africa Regional Workshop on Geomedicine, Nairobi, Kenya, 23 - 27 June, 1999

Geoenvironmental Hazards and Disasters in Africa, Nairobi, Kenya, 01 - 03 July, 2002

Addressing Environmental Health Impacts of Major and Abandoned Mines in SubSaharan Africa, Johannesburg, South Africa, 10 - 12 November, 2011

Quest for Pragmatic Solutions to Complex Environmental and Health Problems of Small Scale Mining in Sub-Saharan Africa, 27 - 30 June, 2012, Kumasi, Ghana

UNESCO/SIDA Scoping Workshop on Environmental and Health Impacts of Active and Abandoned Mines in Sub- Saharan Africa, Johannesburg, South Africa, 27 – 30 January, 2013

Addressing Environmental Health Impacts of Mining in Sub-Saharan Africa Through Improvements in Mitigation and Rehabilitation Techniques, Yaounde, Cameroon, 25 - 29 June, 2013

Addressing Environmental and Health Impacts of Active and Abandoned Mines in Sub- Saharan Africa, Prague, Czech Republic, 26 - 28 May, 2014

 “Organised Session” - „Urban Geochemistry and Pollution of African Megacities‟, Joint International Conference on Environment, Health, GIS and Agriculture, Galway, Ireland, 2016