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Ahead of explosion, Port Neches plant reported an increase of rogue emissions of explosive gas

After the federal government required TPC Group to install air monitors at its Port Neches plant, the company detected a significant increase in the number and size of butadiene emissions in the months leading up to multiple blasts at the plant on Nov. 27.

A process tower flies through air after exploding at the TPC Group Petrochemical Plant in Port Neches. An earlier massive explosion sparked a blaze at the plant on Nov. 27, 2019.

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