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historicalmarkerproject/markers/HM1XA7_glen-canyon-bridge-cableways-historical_Page-AZ.html
Glen Canyon Bridge Majestic Glen Canyon Bridge, 865 feet (264 meters) downriver from the dam, was the highest steel-arch bridge in the United States when completed. The roadway is 700 feet (213 meters) above the surface of the Colorado R…
historicalmarkerproject/markers/HMR0O_turbine-runner_Page-AZ.html
This stainless steel turbine runner was removed in 1989 from the Bureau of Reclamation's Crystal Dam Powerplant in Montrose, Colorado. Weighing about 8½ metric tons, it is the rotating part of a Francis-type reaction turbine (named after its …
historicalmarkerproject/markers/HMR0N_glen-canyon-dam_Page-AZ.html
Dedicated bythe First LadyMrs. Lyndon B. JohnsonSeptember 22, 1966 United States Department of the InteriorStewart L. Udall, SecretaryBureau of ReclamationFloyd E. Dominy, Commissioner [The following marker is inside thePowerplant Gallery ar…
historicalmarkerproject/markers/HMR04_colorado-river-storage-project-glen-canyon-dam_Page-AZ.html
Colorado River Storage ProjectIn recognition of the vision of the Colorado River Storage Project Act of 1956 and the significant contributions the act has made to the development of the Upper Colorado River Basin states, this plaque commemorates t…
historicalmarkerproject/markers/HMR03_intake-structures_Page-AZ.html
The eight small "buildings" on the upstream face of the dam contain equipment to operate the penstock gates. Each penstock is 15 feet (4.6 meters) in diameter and carries water to one of the turbine generators in the powerplant.
historicalmarkerproject/markers/HMR01_rock-bolts-high-scaling_Page-AZ.html
Rock BoltsSince Navajo sandstone tends to fracture vertically, rock bolts lock rock slabs together, thereby minimizing rock falls into the canyon. These bolts extend from 45 to 75 feet (14-23 meters) into the canyon wall. They are assembled in 10 …
historicalmarkerproject/markers/HMQZZ_hydroelectric-power-a-green-and-renewable-energy-source_Page-AZ.html
Glen Canyon Dam and other dams along the Colorado River provide critical water and power resources for millions of Americans in the Southwest. Recreation at the reservoirs is enjoyed by visitors from around the world. Turbine RunnerThis turbine…
historicalmarkerproject/markers/HMQZX_concrete-bucket-concrete-core-sample_Page-AZ.html
Concrete BucketThis is one of several concrete buckets that poured the concrete in Glen Canyon Dam. Each bucket held 24 tons (22 metric tons) of concrete and it took over 400,000 buckets to complete the dam. The first pour of concrete occurred on …
historicalmarkerproject/markers/HMQZH_dinosaur-tracks_Page-AZ.html
The imprints were made by a one ton, twenty foot long, meat-eating dinosaur. The slab of sandstone came from a nearby side canyon. When Dilophosaurus tracked through the silt 170 million years ago, this was a different landscape. Shallow stream…
historicalmarkerproject/markers/HMQZG_bureau-of-reclamation-memorial-fountain_Page-AZ.html
This fountain is dedicated to the memory of our fellow employees who died October 8, 1997 in a plane crash near Montrose, Colorado. Their names encircle the fountain just as the accomplishments of their careers and lives encircle us. Dedicat…
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