NEWSMartin Marietta Materials Asphalt PlantAggregate at right, travels by conveyor belt to the mixer to be mixed with liquid asphalt then sent to the silos at left, where it is loaded into trucks, at the Martin Marietta Material's asphalt plant in Fort Collins Wednesday April 23, 2014.V. Richard Haro/The ColoradoanDavid Lemesany, left, Regional vice president/general manager, asphalt & Paving for Martin Marietta Materials, and Jerimy Runner, right, construction manager, show Larimer County commissioners, Lew Gaiter III, left, and Steve Johnson, how asphalt is made at the Martin Marietta Material's asphalt plant in Fort Collins Wednesday April 23, 2014.V. Richard Haro/The ColoradoanThe heat that reaches temperatures over 300 degrees in the mixer where the crushed aggregate is mixed with liquid asphalt, at the Martin Marietta Material's asphalt plant in Fort Collins Wednesday April 23, 2014.V. Richard Haro/The ColoradoanTrucks line up to be filled with asphalt, left, at the Martin Marietta Material's asphalt plant in Fort Collins Wednesday April 23, 2014.V. Richard Haro/The ColoradoanA front-end loader fills big bins with aggregate which is then crushed and later mixed with liquid asphalt at the Martin Marietta Material's asphalt plant in Fort Collins Wednesday April 23, 2014.V. Richard Haro/The ColoradoanAsphalt is released from a big silo into trucks, at the Martin Marietta Material's asphalt plant in Fort Collins Wednesday April 23, 2014.V. Richard Haro/The ColoradoanThis drawing shows the inner workings of an asphalt mixer, which Martin Marietta Materials uses at its asphalt plant near Fort Collins.Courtesy Of Martin Marietta MaterialsThis drawing shows the inner workings of a baghouse, like that used at Martin Marietta Materials' asphalt plant near Fort Collins.Courtesy Of Martin Marietta MaterialsThis drawing shows the outline of an asphalt plant, similar to the plant near Fort Collins operated by Martin Marietta Materials.Courtesy Of Martin Marietta Materials