2024 Yes Indoor and outdoor PM 10 levels at schools located near mine dumps in Gauteng and North West Provinces, South Africa https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5219730/ Nkosi, Vusumuzi Africa Observational Epidemiological Students Middle/Jr High (6-8) Particulate Matter (PM) Mine dumps School Air pollution Asthma South Africa PM10, SO₂, and indoor respirable dust were measured at 10 South African schools near/far from mine dumps. Exposed schools had significantly higher pollutant levels. Findings suggest elevated health risks for asthmatic students, despite guideline compliance. 2017