Hot Mix Asphalt   As one of the leaders in the production of hot mix asphalt in Western Colorado, United Companies 6 state-of-the-art asphalt plants set the standard for the production of top-quality hot mix asphalt products. All 6 of our plants have been awarded the National Asphalt Paving Association's Diamond Achievement Commendation. Only 11 of these commendations have been awarded in Colorado, and our plants have received over half of the commendations awarded. Our high quality hot mix asphalt mixes are suitable for every type and size of construction project.   United’s technically advanced plants include computer-controlled mixing of hot mix asphalt. We focus our efforts on producing quality materials for our customers that meet the highest of quality specifications. Product mixes are continually tested by certified technicians for quality and uniformity.