Code for Africa, the Pulitzer Center and Earth Genome have partnered to build Africa Mining Watch, a satellite imagery and machine learning platform that detects mining operations across the continent, adapted from Amazon Mining Watch. This talk walks through how the three organisations are structuring transnational investigative journalism projects around the tool, pairing continental data leads with targeted one-on-one mentorship for African journalists. It also covers the community-building model behind the platform, including a mapathon bringing together journalists from across Africa to interrogate the data and develop original story pitches.