The company said pressure likely built up inside the valve, causing it to fail and leading to coke oven gas filling the area, which then exploded after being ignited.

Berkshire purchases often boost stocks. Shares of the steel maker were rising 6% on Friday to $153 a share, while S&P 500 and ...

Americas Gold And Silver is shifting to silver and copper, leveraging strong liquidity and growth strategies. See more on ...