Jan-Bart Gewald is a socio-cultural historian of southern Africa and professor of African History at Leiden University. He has published widely, including Mining Kambove and Testing for Trypanosomiasis: Migrant Labour, Tsetse Flies, and Consumption, The Establishment of Colonial Authority and Suzerainty on the Luapula Border, Northern Rhodesia Katanga, 1904-1914 (2024) (ASCL).The late Sabine Luning (1959-2025) was associate professor at the Institute of Cultural Anthropology and Development Sociology at Leiden University, focusing her research on Landscapes of Extraction. She published widely on the topic, amongst which Luning (2018), 'Mining Temporalities: Future perspectives', in Extractive Industries and Society 5(2): 281-286 (2018).Harry Wels is multispecies organizational ethnographer and associate professor at Vrije Universiteit Amsterdam, the African Studies Centre Leiden and extraordinary professor at the University of the Western Cape, South Africa. He is Editor in Chief of the Journal of Organizational Ethnography.