Elon Musk referenced a Pennsylvania limestone mine where federal employee retirements are processed, but the mine's story is complicated.

Trump signed proclamations raising the U.S. tariff rate on aluminum to 25% from his previous 10% rate and eliminating country ...

Iron is the main ingredient in various forms of iron and steel, but the various types of metals contain other elements as well. Sometimes these elements are unwanted; other times they're ...

The iron was used in engineering, shipbuilding and to make wrought iron and, later, steel. It was exported throughout the world. However, the industry was not sustainable and local reserves of ...

There are countless examples throughout history of countries defying economic logic in search of other goals. But it's hard ...

The president imposed a 25 percent tariff on global metals, repeating a move from his first term. Economists and foreign ...