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LONGVIEW, Wash. -- Ports throughout western Washington were back open Friday morning after fiery protests at the Port of Longview and work stoppages in Seattle, Tacoma and Everett.

Nineteen protesters were arrested Thursday morning for trespassing at the EGT grain terminal.

Background: Longshoremen storm Port of Longview in labor dispute

The International Longshore and Warehouse Union has been in a labor dispute with Portland-based EGT since it hired a different union to work at the grain-loading facility.

Hours after the arrests, 500 protesters swarmed the terminal.

Rail cars were damaged, grain was dumped and authorities said some police officers were sprayed with mace. Six security guards were trapped in the facility for hours, Longview Police Chief Jim Duscha said. He initially referred to the guards as hostages, but later retracted that after the guards clarified no one had threatened them.

The Cowlitz County Sheriff's Dept. said more deputies will now focus their patrols in the area where the protests are taking place.

More: Judge warns Wash. union to halt illegal tactics

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