Plains dust storm
A massive dust storm swirling reddish-brown clouds over northern Oklahoma triggered a multi-vehicle accident along a major interstate.
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Blackwell, Okla.
Trooper Jason Ross of the Oklahoma Highway Patrol wears a bandana to filter heavy dust whipped by strong winds as he works at the site of a multi-vehicle accident on Interstate 35 near Blackwell, Okla., on Thursday, Oct. 18, 2012. Police said nine people were injured.
Credit: AP Photo/The Ponca City News, Rolf Clements
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