Matches in DBpedia 2014 for { ?s ?p The Trans-Canyon Telephone line in Grand Canyon National Park crosses the Grand Canyon from the South Rim to the North Rim via the Inner Canyon. The lines were constructed in 1934 and altered in 1938-39 by the Civilian Conservation Corps, and have been unchanged since their installation. Telephone lines are supported using 592 assemblies of 2-inch (5.1 cm) galvanized pipes and fittings, which could be easily transported and assembled with minimal impact to the canyon environment.. }
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- Trans-Canyon_Telephone_Line,_Grand_Canyon_National_Park comment "The Trans-Canyon Telephone line in Grand Canyon National Park crosses the Grand Canyon from the South Rim to the North Rim via the Inner Canyon. The lines were constructed in 1934 and altered in 1938-39 by the Civilian Conservation Corps, and have been unchanged since their installation. Telephone lines are supported using 592 assemblies of 2-inch (5.1 cm) galvanized pipes and fittings, which could be easily transported and assembled with minimal impact to the canyon environment.".