Investigators look for cause of massive steel mill fire

SAN ANTONIO, Texas - Investigators are trying to figure out what sparked a massive fire at a steel mill near San Antonio on Wednesday.

Authorities said the fire started about 5:30 a.m. at the CMC Steel Texas in Seguin. Over a dozen fire departments responded to the blaze.

Steel Mill officials said the flames started on a material feedstock pile.

Two firefighters were treated for minor injuries.

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