Washington Paper Mill Fire Worsens Portland Air Quality; Crews Continue Battle
- Massive fire broke out Tuesday night at a paper mill in Longview, Washington.
- Fire likely to burn for days; crews continue efforts to control blaze.
- Smoke from fire caused unhealthy air quality in Portland, Oregon area.
- Residents advised to stay indoors to limit exposure to smoke.
- No injuries reported so far to workers or firefighters.
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