West Fertilizer plant West Fertilizer plant

Trucks make their way through floodwaters on a road leading to Arkema Inc. in Crosby, Texas, Wednesday. Chemicals at the plant are in danger of exploding because refrigeration is out owing to Hurricane Harvey. Brendan Smialowski/AFP/Getty Images hide caption

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Brendan Smialowski/AFP/Getty Images

Debby Keel holds her grandchild, Kennedy, as Texas Highway Patrol officers record the entry of residents who are allowed to return to their homes near the site of the April 17 fertilizer plant blast in West, Texas. Frederic J. Brown/AFP/Getty Images hide caption

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Frederic J. Brown/AFP/Getty Images

A vehicle is seen near the remains of a fertilizer plant burning after an explosion in West, Texas, near Waco. The explosion ripped through the fertilizer plant late Wednesday. Mike Stone/Reuters /Landov hide caption

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Mike Stone/Reuters /Landov