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Created1926-04-02
DescriptionGrand Canyon National Park General Regulations.
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Created2014-09
Description

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

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.

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Created1933
DescriptionGuide Leaflet No. 1 detailing the desert view drive of the Grand Canyon.
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Created1940
DescriptionGuide Leaflet No. 3 detailing the west rim drive in the Grand Canyon.
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Created1929
Description

Typescript report, black and white, describing the mammals of Grand Canyon National Park with cover drawing of a bighorn sheep.