Filtering by
- All Subjects: Hayden, Carl Trumbull, 1877-1972
- All Subjects: Roads
- All Subjects: Goodman, Frank R., 1882-1968
- Creators: Eakin, J. R.
- Creators: Goodman, Frank R.
- Creators: Arizona. Department of Transportation. Research Center
Letter from F. R. Goodman to Carl Hayden expressing Coconino County's interest in handing over Bright Angel Trail to the government provided a sufficient amount of money is appropriated to build a road from Maine to the Grand Canyon.
Press release from J. R. Eakin about construction of Desert View Road.
Letter from J. R. Eakin to Stephen T. Mather about expenses and reconstruction of the Kaibab Trail.
Letter from J. R. Eakin to Carl T. Hayden concerning access to Rowe Well and the canyon.
Letter from F. R. Goodman to Carl T. Hayden asking for clarification about the agreement to construct an approach road to the park
The objective of this study was to evaluate the effect of typical chemical winter maintenance practices on Arizona Department of Transportation pavements. A review of previous studies on the effect of deicing/anti‐icing chemicals did not yield definitive recommendations, especially for DIAICs typically used by ADOT. Researchers conducted a laboratory study evaluating the effects of magnesium chloride, potassium chloride, sodium chloride, and distilled water on eight different open‐graded rubber‐modified asphalt concrete mixes using the boiling test. All experimental factors were found to be statistically significant, and the researchers provide recommendations on which DIAICs should be used for different binder and aggregate types.
Letter from J. R. Eakin to Carl Hayden justifying the value of his land at twenty-five thousand dollars.
Letter from J. R. Eakin to Carl Hayden regarding the sale of Bass properties to the Santa Fe Railroad Company.