Box PCA0522
Container
Contains 95 Results:
A different perspective of Image 40, indicating how precarious the drilling work could be., 1977-05
Item — Box: PCA0522
Identifier: PCA0522-41
Scope and Contents
Image taken May 1977
Dates:
1977-05
Large air compressor unit used to provide compressed air to the air drilling equipment. In the top center of the image an air track drill is visible on the topside of the rock face., 1977-05
Item — Box: PCA0522
Identifier: PCA0522-42
Scope and Contents
Image taken May 1977
Dates:
1977-05
The highway at subgrade elevation. Notice the large embankment that was necessary to maintain a design grade of over 8% (8 feet of rise for every 100 feet of run). Image faces towards Skagway., 1977-05
Item — Box: PCA0522
Identifier: PCA0522-43
Scope and Contents
Image taken May 1977
Dates:
1977-05
Three CC drillers making corrections to the pre-shear rock face at the bottom of the slope., 1977-05
Item — Box: PCA0522
Identifier: PCA0522-44
Scope and Contents
Image taken May 1977
Dates:
1977-05
Two drill towers are visible on a foggy and misty day., 1977-05
Item — Box: PCA0522
Identifier: PCA0522-45
Scope and Contents
Image taken May 1977
Dates:
1977-05
ADOT surveying crew cross sectioning at the top of rock face., 1977-05
Item — Box: PCA0522
Identifier: PCA0522-46
Scope and Contents
Image taken May 1977
Dates:
1977-05
Hewlett-Packard electronic distance measuring device being used by the control surveying crew. This equipment was beginning to become standard issue in the industry; but cost, at the time, did not permit widespread use by ADOT surveying crews., 1977-05
Item — Box: PCA0522
Identifier: PCA0522-47
Scope and Contents
Image taken May 1977
Dates:
1977-05
View of the highway looking back station toward Skagway. Note the William Moore Bridge and an incredible perspective of the roadway excavations and embankments., 1977-05
Item — Box: PCA0522
Identifier: PCA0522-48
Scope and Contents
Image taken May 1977
Dates:
1977-05
Mountain visible along the road construction near the Moore Bridge., 1977-06
Item — Box: PCA0522
Identifier: PCA0522-49
Scope and Contents
Image taken June 1977
Dates:
1977-06
ADOT surveyor, Van Sundberg of Juneau, setting up the transit., 1977-06
Item — Box: PCA0522
Identifier: PCA0522-50
Scope and Contents
Image taken June 1977
Dates:
1977-06