From The Milwaukee (Wis.) Sentinel. TimesMachine is an exclusive benefit for home delivery and digital subscribers. About the Archive This is a digitized version of an article from The Times’s ...

The UK has 6,630 abandoned industrial lead mines — of which more than 3,600 are in England — that continue to disperse the metal into the environment each year. Lead can accumulate in ...

The town is built around one of the nation's largest lead mines, and is divided by railway tracks and a giant wall of dirt, known as the "mullock heap", built from the mine's waste material.