Sudan gold rush toxic legacy: mercury risk insights for mine project teams
Reviewed by Tom Sullivan

First reported on MINING.com
30 Second Briefing
Sudan’s wartime gold boom is driving rapid expansion of artisanal mining in River Nile and Northern states, with 2–5 million people now dependent on largely unregulated operations using mercury mixers and cyanide basins near palm groves, farms and shallow groundwater. Field investigations around El-Obeidiya and Abu Hamad report millions of tonnes of karta tailings, mercury readings in Village 3 soils up to 2,825.24 (units unspecified) and earlier surveys finding mercury and cyanide in 20% of sampled drinking water north of Atbara. Artisanal mining now provides about 80% of Sudan’s gold output and 58% of export revenues, severely constraining enforcement of bans on mercury and cyanide use outside certified facilities.
Technical Brief
- Karta tailings dumps around El-Obeidiya and Abu Hamad amount to millions of tonnes adjacent to farms and housing.
- Soil mercury concentrations at Village 3 peak at 2,825.24 (units unspecified), with deep samples still >800.
- Earlier surveys north of Atbara–south of Berber found mercury/cyanide in 20% of tested drinking-water sources.
- Contamination risk extends to clay water-cooling pots, livestock troughs and the Keheila canal used for irrigation.
- Biological sampling of children aged 4–11 already shows measurable mercury exposure in affected River Nile communities.
- Authorities formally ban mercury and cyanide use outside certified facilities but report wartime conditions crippling on-site inspections.
Our Take
The earlier coverage of the Jabal al-Uqaydat strike in our database shows a pattern of repeated high‑casualty attacks on artisanal gold sites in Sudan, suggesting that mine safety risk assessments in the River Nile and Northern regions now need to treat airstrikes as a recurring, not exceptional, hazard driver.
With gold providing more than 58% of Sudan’s export revenues in 2025 and about 80% of output coming from artisanal mining, any move to restrict mercury and cyanide use around Atbara, Berber and Abu Hamad will likely face strong local economic resistance unless paired with alternative income or cleaner processing options.
BHP’s Escondida is referenced alongside Sudanese sites in several copper‑tagged pieces in our coverage, underscoring how global copper and gold supply discussions now juxtapose large, regulated operations in Chile with conflict‑affected artisanal districts in Sudan when investors evaluate ESG and supply‑chain exposure to toxic reagents like mercury and cyanide.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
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