An explosion at a U.S. Steel plant near Pittsburgh left two dead and sent at least 10 to hospitals Monday and heavily damaged the sprawling facility, officials said. One worker was pulled from the wreckage hours after the explosion sent black smoke spiraling into the midday sky in the Mon Valley, a region of the state synonymous with steel for more than a century. A second missing worker was found deceased Monday evening. MORE: https://www.wthr.com/article/news/nation-world/explosion-us-steel-coking-plant-in-pennsylvania/507-efb85944-cc35-474c-8fed-0f11699ed9ea