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![Flames and smoke emerge from the Philadelphia Energy Solutions refinery in Philadelphia on June 21. Experts say the explosions could have been far more devastating if deadly hydrogen fluoride had been released.](https://woub.org/wp-content/uploads/2019/07/ap_19172359603324-79a33f0a85bc306df1e14c6a6a3c2a95015a8f33-e1563556078724-900x422.jpg)
Refinery Explosions Raise New Warnings About Deadly Chemical
By: Susan Phillips | NPR
Posted on:
Chemical experts say recent refinery explosions could have been far more devastating if deadly hydrogen fluoride was released. Some are calling for a ban on the chemical.