MONTGOMERY COUNTY, Md. (7News) — A tractor-trailer caught fire on the Outer Loop of I-495 early Sunday morning, spilling 15-20 barrels of hazardous tungsten metal, according to the Montgomery ...

Two dozen barrels of tungsten metal powder, which can be used in making explosives, were stolen from a Huntsville business, the authorities said. The 17-gallon barrels were taken during a burglary ...

Bimetallic barrels taken to next levelBimetallic barrels taken to next level The tungsten carbide bore inlay on a bimetallic barrel has been modified to include Durocast tungsten carbide chemistry.