1. Graduate Research Assistant, Pavements/Materials Program, Dept. of Civil Engineering, Univ. of Nevada, Reno, NV 89557.
2. Professor and Director, Pavements/Materials Program, Dept. of Civil Engineering, Univ. of Nevada, Reno, NV 89557.
3. Chief Materials Engineer, Materials Division, Nevada Dept. of Transportation, 1263 S. Stewart Street, Carson City, NV 89712.