The shaft is about 32 feet deep, and has been sunk in rich lead ore from the very surface. In the bottom of the shaft the vein is over 9 feet wide. On its south wall there is a very rich "leader ...

Ancient Greeks made their coins by extracting silver from lead-rich ore. Greece’s mining and smelting operations ended up seriously polluting Earth’s atmosphere, as modern scientists have ...

Mined in Derbyshire and smelted during a period of Roman occupationGalena, the ore of lead, was mined in Derbyshire from the Bronze Age. Romans worked lead ore in Derbyshire where it was smelted ...

A lot of political changes are coming to Portland, Ore. The open mayoral race in the state’s most populous city features 19 candidates — all vying to lead after years of growing frustration ...

PORTLAND, Ore. (KOIN) — An increasing number of bald eagles are suffering from lead poisoning in northwest Oregon, according to the Wildlife Center of the North Coast, located in Clatsop County.