
Researchers collected and sorted through more than 38,000 pounds of mixed recyclables from 173 sample loads. | Rubens Alarcon/Shutterstock
Researchers have quantified contamination in the business recycling stream in the Portland, Ore. metropolitan area, providing data that can be used to make operational or outreach decisions.








Natural HDPE inched up this month, but most other post-consumer plastic grades are trading for lower prices.