Search for all of "Black Canyon"

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	Title	Description
51	Construction on the Arizona spillway and the no. 4 penstock raise in Black Canyon	View of construction on the Arizona spillway and the no. 4 penstock raise. Black Canyon surrounds the construction site. An electric dragline and trucks are seen on the dirt road above the spillway.
52	Aerial view of the Hoover Dam construction site in Black Canyon showing the upstream dam...	Aerial view of the Hoover Dam construction site in Black Canyon showing the upstream dam face, which has concrete pouring forms on the top of it, the Arizona and Nevada spillways, and the unfinished Arizona intake towers. The Colorado Rivers...
53	Upstream view of the completed Nevada spillway drainage flume and surrounding area in Black Canyon	Upstream view of the completed Nevada spillway drainage flume and surrounding area in Black Canyon.
54	Looking downstream from the Arizona side of Black Canyon, showing the reservoir level at the...	View of the Hoover Dam site looking downstream from the Arizona side of Black Canyon, showing the reservoir level (Lake Mead) at the base of the intake towers.
55	Crews and equipment in Black Canyon at dam site	A view of the Colorado River flowing through Black Canyon (not Boulder). In the foreground are air compressors and an open sided shed with a construction worker standing inside. There are tracks running along side of the shed following the...
56	Looking up Hoover Dam during construction of the diversion tunnels	Looking upstream on the Colorado River flowing through Black Canyon at the Hoover Dam construction site. Bridges and catwalks are suspended over the river and the newly-dug mouths of the diversion tunnels are seen on both sides of the canyon....
57	Black Canyon during early stages of dam construction	Handwritten inscription on back of photo: "Building of new suspension bridge downstream from upper portals. Note man riding down on bridge section." Hoisting equipment is visible suspended high above the Colorado River in Black Canyon.
58	Aerial view of Colorado River-Black Canyon	Aerial view of the Colorado River in Black Canyon and the surrounding area.
59	Construction crew at bottom of Boulder Canyon	Construction crew busy making forms at the bottom of Black (not Boulder) Canyon. There are tracks leading into the water that is in the canyon and there is a couple of carts sitting on the tracks. Several of the...
60	Construction crews in Boulder Canyon	A view of construction workers digging rocks and boulders on the side of Black (not Boulder) Canyon. The Colorado River is flowing through the bottom of the canyon.
61	Concrete pouring forms on the Hoover Dam construction site seen from downstream	Aerial view of multiple concrete pouring forms on Hoover Dam, seen from downstream on the Colorado River in Black Canyon. Cables, pulleys and catwalks are suspended over the river. Some construction equipment can been seen on the mountains.
62	Portion of the gravel pits on the Arizona side of the Colorado River	A man is seen standing in the Hoover Dam construction site gravel pits on the Arizona side of the Colorado River. The hills in the background are across the river in Nevada, five miles away.
63	Construction crews in Boulder Canyon.	Photo shows a power shovel and dump truck doing construction work in Black Canyon (not Boulder Canyon).
64	One of the construction sites in Boulder Canyon.	Shows construction equipment, a boat, and various structures. Location is a rocky outcrop in Black Canyon (not Boulder Canyon) on the bank of the Colorado River.
65	Dragline loading gravel into railroad side dump cars	View of an electric dragline loading railway side dump cars in the gravel pit in Black Canyon. Mikado type locomotives pull 10-car trains, 3 trains of this type [were] in operation.
66	Aerial view of the Colorado River showing diversion of the river into diversion tunnels no....	Aerial view of the Colorado River in Black Canyon showing the diversion of the river into diversion tunnels no. 3 and 4.
67	Boulder Canyon.	View of the Colorado River in Black (not Boulder)Canyon.
68	Boulder Canyon.	View of the Colorado River flowing through Black Canyon (not Boulder Canyon).
69	Aerial view of Colorado River in Boulder Canyon.	An aerial view of the Colorado River flowing through Black Canyon (not Boulder Canyon).
70	Aerial view of Boulder Canyon.	Aerial view of the Colorado River flowing through Black (not Boulder) Canyon.
71	Boulder Canyon	This photograph shows a view of the Colorado River in Black (not Boulder) Canyon.
72	Bridge across Boulder Canyon at Hoover Dam site.	A bridge stretches from one side of Black (not Boulder) Canyon to the other side, with the Colorado River flowing beneath. The background shows scaffolding against the mountainside. A building sits against the mountain at the far end of the...
73	Construction on Hoover Dam	Aerial view of Black Canyon, prior to construction of Hoover Dam, showing a row of buildings in the distance.
74	Visitors at Lookout Point	Group of men view the spectacular panorama of the construction site of Hoover Dam from Lookout Point.
75	Hoover Dam -- downstream face	Color transparency of the downstream face of Hoover Dam. This panoramic view shows the portals of the diversion tunnels, the power house, the walls of Black Canyon, and the Colorado River.
76	High scaling operations	View of Black Canyon with construction equipment on the canyon floor and cables suspended over the canyon. High scalers can be seen on the rock face on the left side of the photo.
77	Hoover Dam Construction -- blasting	Shows four construction workers sitting on the bank of the Colorado River in Black Canyon, watching a dynamite blast at the Hoover Dam site. The blast started the flow of water. Hand-written inscription (sentence in quotes in title)...
78	Colorado River before Hoover Dam was built	Photo taken from high above the Colorado River, showing the river and surrounding mountains. This was taken before the constuction of Hoover Dam in Black Canyon.
79	Construction of Hoover Dam	View of construction on the canyon floor of Black Canyon. Trucks and roads are visible. Some buildings can be seen also. The concrete pouring forms and a cofferdam are also visible.
80	Hoover Dam construction site, looking upstream	This is a view of the wooden concrete forms used in the construction of Hoover Dam, looking upstream. Buildings and vehicles are visible. The photo was taken from high above the site.
81	Aerial view of the future site of Hoover Dam	Shows Black Canyon and the Colorado River where Hoover Dam was later constructed. Some roads and railroad tracks are visible, as well as a small building.
82	Hoover Dam construction site	Shows Black Canyon and the Colorado River at the site of the construction of Hoover Dam. Some roads and railroad tracks are visible as well as buildings. Shown also are railroad cars and a temporary suspension bridge.
83	Hoover Dam construction	View of construction of Hoover Dam from the upper portals. Hoisting machinery and an intake tower are visible. The Colorado River in Black Canyon can be seen also.
84	Construction of Hoover Dam	Shows a panoramic view of the Hoover Dam site in Black Canyon. There are trucks and buildings visible on the floor of the canyon. One of the portals to the diversion tunnels is visible. The concrete pouring...
85	Hoover Dam site, looking downstream	View of the beginning of Hoover Dam contruction at the bottom of Black Canyon. Various pieces of equipment, trucks, workers, etc. are visible including a crane suspended above the construction site. The view is from downstream.
86	First concrete in Hoover Dam	Construction workers are pouring the first concrete for the foundation of Hoover Dam in the bottom of Black Canyon. Large bucket suspended from a crane is visible as well as the concrete frames for the pour.
87	Hoover Dam, looking upstream	View from high above the canyon of the early stages of building the wooden forms for pouring the concrete in the construction of Hoover Dam in Black Canyon. Vehicles and other equipment can be seen as well as hoisting...
88	Hoover Dam, looking downstream	View of the construction of the foundations of Hoover Dam on the floor of Black Canyon. Various pieces of machinery can be seen as well as a construction building. The view is taken from high above but several...
89	Hoover Dam construction, looking upstream	This photo shows the construction of the foundation of Hoover Dam on the floor of Black Canyon. Trucks, construction equipment, and cranes can be seen as well as several construction buildings. Photo taken from high above the canyon.
90	Penstock tunnel, Hoover Dam	Aerial view of the Hoover Dam construction site on the Colorado River in Black Canyon. Cables are suspended across the canyon and a dirt road runs along the canyon floor. Early construction on a penstock tunnel can be...
91	Low mix concrete plant	Aerial view of the Colorado River running through Black Canyon. The buildings and structures forming the low mix concrete plant are seen on the right side.
92	Hoover Dam construction, looking upstream	View of the construction of Hoover Dam, looking upstream. Shows concrete forms, various construction buildings, and high scaling equipment. Taken from high above, the Colorado River can be seen above the dam site.
93	Hoover Dam construction, looking upstream	Upstream view of the Hoover Dam construction. Shows concrete forms, construction buildings, and a train winding along the edge of the canyon. The Colorado River is visible above the construction site.
94	Hoover Dam construction, looking upstream	View from on high of Hoover Dam construction, looking upstream. The Colorado River can be seen above the dam. Also shows concrete forms, a train winding along the side of the canyon, high scaling equipment, construction buildings, and...
95	Hoover Dam construction, looking upstream	Overhead view of the construction of Hoover Dam in Black Canyon. Looking upstream, the Colorado River is visible above the dam site. Also shows concrete forms, a train winding along the side of the canyon, and various construction...
96	Hoover Dam construction, looking upstream	Construction site of Hoover Dam in Black Canyon, looking upstream. Above the site is the Colorado River. Shows concrete forms, a train winding along the wall of the canyon, various construction buildings, hoisting machinery, and a cable suspended...
97	Hoover Dam construction, looking upstream	View of Hoover Dam construction site, looking upstream. Above the site is the Colorado River. There are concrete forms, construction buildings, hoisting machinery, and a cable high above the Black Canyon in the picture. There is also...
98	Hoover Dam construction, looking upstream	Construction photo of Hoover Dam in Black Canyon, showing the Colorado River above the dam site. Also shows concrete forms, a train winding along the canyon wall, high scaling and hoisting machinery, various construction buildings and a cable suspended...
99	Hoover Dam construction, looking upstream	Overhead view of the construction of Hoover Dam in Black Canyon with the Colorado River visible above the dam site. In the photo are concrete forms, various construction buildings, a train winding along the side of the canyon, high...
100	Power house construction	Aerial view of the Hoover Dam construction site within Black Canyon. The nearly-completed dam wall is seen in the back and the mouths of the diversion tunnels are seen in the foreground. Buildings and scaffolding stand on the...