Chemical Board Declines to Probe California Refinery Fire

The U.S. Chemical Safety Board is currently pursuing 13 active industrial accident investigations.
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The U.S. Chemical Safety Board is currently pursuing 13 active industrial accident investigations.
An explosion reportedly preceded the fire at Marathon Petroleum's southern California refinery.
Change in refinery fire protection raises concerns among city officials.
Corpus Christi industrial area known as "refinery row" affected by the blast.