“When the Torrance refinery exploded in February 2015, showering residential neighborhoods with industrial ash, the event ignited a three-year public debate over hydrofluoric acid that continues to this day.
“Here are the major developments we’ve seen since then:
https://www.dailybreeze.com/2018/04/26/developments-in-the-debate-over-hydrofluoric-acid/
Torrance Refinery Action Alliance 
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