Dozens of people have died during tropical storm Harvey.

Motiva Enterprises announced that it would be reducing the capacity at its Port Arthur, TX refinery, the country's largest, by 60% hours after reports that the company would shut the refinery down completely due to tropical storm Harvey. 

"Although weather conditions continue to deteriorate, Motiva's Port Arthur Refinery remains stable at reduced rates approximately equal to 40% of capacity. Our highest priority remains the safety of our employees and community," the company said in a statement. 

The company also announced that it will donate $500,000 to Harvey relief efforts. 

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