Oregon highway crews could soon be trading their hot-mix asphalt for the warm-mix blends already popular in Europe. The cooler mixing process operates at around 225 degrees Fahrenheit, versus 300 degrees for hot-mix asphalt, and is better for the planet because it uses less fuel and produces fewer emissions. Officials say they're examining a number of pilot projects to check that warm-mix asphalt will still produce high-quality pavement.

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