Snohomish County Fire Battalion Chief Steve Mason
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Fire Chief: 'Inch by inch' search of mudslide area

Rescue workers are continuing to search for victims of a mudslide in Washington state.

Some 90 people remain missing after the 177ft (54m) wall of mud hit the town of Oso, north of Seattle.

Snohomish County Fire Battalion Chief Steve Mason explains the work that is going on on the site.

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