Oak Flat in Arizona is at the center of a struggle that's going on three decades. Here's everything that has happened with the proposed copper mine.

If you compare a modern PCB with a typical 1980s PCB, you might notice — like [lcamtuf] did — that newer boards tend to have large areas of copper known as pours instead of empty space between traces.

The drill’s chemical composition was also surprising, study co-author Jiří Kmošek noted, as it is made up of an unusual copper alloy containing arsenic, nickel, lead, and silver. A small copper tool ...

Southern Copper Corporation is a subsidiary of Grupo México and is one of the world's largest copper mining companies. The company generates most of its revenue from copper, with smaller amounts ...