Scattered across Arizona are nearly 200,000 abandoned mines. Many of them sit quietly in Mohave County, tucked into hills and valleys outside Lake Havasu City. They don’t make headlines. Most ...

At the bottom of a long-abandoned mine, 50 metres below the surface, one company searches for rare Welsh gold, attracted by ...

This shift toward renewable storage in abandoned mines is supported by research from the International Institute for Applied Systems Analysis (IIASA). Their findings suggest that using Underground ...

Gift 5 articles to anyone you choose each month when you subscribe. BHP has won permission from the NSW government to shut the state’s biggest thermal coal mine early and pivot towards clean ...