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U.S. Bureau of Reclamation Glen Canyon Pre-Dam

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Aerial View of the Development of Page, Arizona; Glen Canyon Unit, Colorado River Storage Project

Aerial View of the Development of Page, Arizona; Glen Canyon Unit, Colorado River Storage Project

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View of the Dam from Upstream; the Right Abutment Service Road Has Been Set in Place; Glen Canyon Unit, Colorado River Storage Project

View of the Dam from Upstream; the Right Abutment Service Road Has Been Set in Place; Glen Canyon Unit, Colorado River Storage Project

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Up Bearing Bracket in Place for Temporary Alignment in Unit 1 of the Power Plant; Glen Canyon Unit, Colorado River Storage Project

Up Bearing Bracket in Place for Temporary Alignment in Unit 1 of the Power Plant; Glen Canyon Unit, Colorado River Storage Project

A. E. Turner

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Units 1 and 2 of the Power Plant; The Turbine Head Cover and Runner Have Been Removed from Unit 2 to Properly Align and Rebore the Upper Stationary Seal Ring; Glen Canyon Unit; Canyon River Storage Pr

Units 1 and 2 of the Power Plant; The Turbine Head Cover and Runner Have Been Removed from Unit 2 to Properly Align and Rebore the Upper Stationary Seal Ring; Glen Canyon Unit; Canyon River Storage Pr

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230-kV Oil Circuit Breakers Under Erection in the Switchyard; Glen Canyon Unit, Colorado River Storage Project.

230-kV Oil Circuit Breakers Under Erection in the Switchyard; Glen Canyon Unit, Colorado River Storage Project.

A. E. Turner

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View of the Dam From Upstream; Glen Canyon Unit, Colorado River Storage Project

View of the Dam From Upstream; Glen Canyon Unit, Colorado River Storage Project

A. E. Turner

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Generator Stator in Place in Unit 1 of the Power Plant; Glen Canyon Unit, Colorado River Storage Project

Generator Stator in Place in Unit 1 of the Power Plant; Glen Canyon Unit, Colorado River Storage Project

A. E. Turner

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Air Circuit Breakers in the 345-kV Area of the Switchyard; Glen Canyon Unit, Colorado River Storage Project

Air Circuit Breakers in the 345-kV Area of the Switchyard; Glen Canyon Unit, Colorado River Storage Project

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Forms Set for Concrete Placement to Elevation 3168.17 in Unit 4 of the Powerplant; Note That Steel Form Is Being Used for the First Time for Placement to This Elevation; Glen Canyon Unit, Colorado Riv

Forms Set for Concrete Placement to Elevation 3168.17 in Unit 4 of the Powerplant; Note That Steel Form Is Being Used for the First Time for Placement to This Elevation; Glen Canyon Unit, Colorado Riv

A. E. Turner

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View of the Dam From Upstream; Glen Canyon Unit, Colorado River Storage Project

View of the Dam From Upstream; Glen Canyon Unit, Colorado River Storage Project

A. E. Turner

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View of the Dam From Upstream; Glen Canyon Unit, Colorado River Storage Project

View of the Dam From Upstream; Glen Canyon Unit, Colorado River Storage Project

A. E. Turner

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View of Switchyard From Top of the Beehive; Glen Canyon Unit, Colorado River Storage Project

View of Switchyard From Top of the Beehive; Glen Canyon Unit, Colorado River Storage Project

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View Northwestward At Tower Number 437, Station 4825+10, Type V, Tubular Steel, Guyed V-Frame Structure Showing Crane Beinning Final Erection of Structure; Foward Line Guy Anchor Near Lower End of Tow

View Northwestward At Tower Number 437, Station 4825+10, Type V, Tubular Steel, Guyed V-Frame Structure Showing Crane Beinning Final Erection of Structure; Foward Line Guy Anchor Near Lower End of Tow

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View Northeastward at Tower 437, Station 4825+10, Type V, Tubular Steel, Guyed V-Frame Structure, Showing Structure on Foundation, Temporarily Guyed and Lineman Have Just Dropped Lifting Slings; Ladde

View Northeastward at Tower 437, Station 4825+10, Type V, Tubular Steel, Guyed V-Frame Structure, Showing Structure on Foundation, Temporarily Guyed and Lineman Have Just Dropped Lifting Slings; Ladde

F. Finch

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Tower 435, Station 4801+50, Type V, Tubular Steel, Guyed V-Frame Structure Being Prepared For Erection By Crane; View Westward; Standard SM-60 Tower 434 in Background; Glen Canyon Unit, Colorado River

Tower 435, Station 4801+50, Type V, Tubular Steel, Guyed V-Frame Structure Being Prepared For Erection By Crane; View Westward; Standard SM-60 Tower 434 in Background; Glen Canyon Unit, Colorado River

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Tower 435, Station 4801+50, Type V Tubular Steel, Guyed V-Frame Structure Showing Suspension Clamp For Overhead Ground Wire and Guy Rod Attachment Details; Glen Canyon Unit, Colorado River Storage Pro

Tower 435, Station 4801+50, Type V Tubular Steel, Guyed V-Frame Structure Showing Suspension Clamp For Overhead Ground Wire and Guy Rod Attachment Details; Glen Canyon Unit, Colorado River Storage Pro

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Tower 435, Station 4801+50, Type V Tubular Steel Guyed V-Frame Structure Showing Phase Hanger and Insulator at End of Cross Arm; Insulator Tied to Cross Arm Preparatory to Erection of Structure Glen C

Tower 435, Station 4801+50, Type V Tubular Steel Guyed V-Frame Structure Showing Phase Hanger and Insulator at End of Cross Arm; Insulator Tied to Cross Arm Preparatory to Erection of Structure Glen C

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Tower 435, Station 4801+50, Type V Tubular Steel, Guyed V-Frame Structure Showing Structure Legs Setting on Centerline Foundation; Structure Ground Wire Protruding From Concrete at Either Side; Struct

Tower 435, Station 4801+50, Type V Tubular Steel, Guyed V-Frame Structure Showing Structure Legs Setting on Centerline Foundation; Structure Ground Wire Protruding From Concrete at Either Side; Struct

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View Southward at Tower 435, Station 4801, Type V Tubular Steel, Guyed V-Frame Structure, Showing Line Guy Anchor and Right Side Guy Anchor at Left Center; Glen Canyon Unit, Colorado River Storage Pro

View Southward at Tower 435, Station 4801, Type V Tubular Steel, Guyed V-Frame Structure, Showing Line Guy Anchor and Right Side Guy Anchor at Left Center; Glen Canyon Unit, Colorado River Storage Pro

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View Northward At Tower 437, Station 4825+10, Type V Tubuluar Steel, Guyed V-Frame Structure, Showing Detail at Right Side Guy Anchor; Structure Temporarily Guyed By Use of Preformed guy Grips; Perman

View Northward At Tower 437, Station 4825+10, Type V Tubuluar Steel, Guyed V-Frame Structure, Showing Detail at Right Side Guy Anchor; Structure Temporarily Guyed By Use of Preformed guy Grips; Perman

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Reading Being Taken in Plumb Line Well in Block 4 of the Dam; Glen Canyon Unit, Colorado River Storage Project

Reading Being Taken in Plumb Line Well in Block 4 of the Dam; Glen Canyon Unit, Colorado River Storage Project

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Looking Southeast Through the Switchyard; Circuit Breakers Are Being Erected in the 230 and 345-kV Yards; Glen Canyon Unit, Colorado River Storage Project

Looking Southeast Through the Switchyard; Circuit Breakers Are Being Erected in the 230 and 345-kV Yards; Glen Canyon Unit, Colorado River Storage Project

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View of Powerplant and Dam From Downstream; Glen Canyon Unit, Colorado River Storage Project

View of Powerplant and Dam From Downstream; Glen Canyon Unit, Colorado River Storage Project

F. Finch

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Unit 1 of the Powerplant; The Stator Has Been Set on the Sole Plates and is Being Bolted Together; Glen Canyon Unit, Colorado River Storage Project

Unit 1 of the Powerplant; The Stator Has Been Set on the Sole Plates and is Being Bolted Together; Glen Canyon Unit, Colorado River Storage Project

F. Finch

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Linemen Preparing to Attach Back Guys For Experimental Guyed Aluminum H Frame Structure, Type 11, Tower 428, View Northward; Glen Canyon Unit, Colorado River Storage Project, Transmission Line Divisio

Linemen Preparing to Attach Back Guys For Experimental Guyed Aluminum H Frame Structure, Type 11, Tower 428, View Northward; Glen Canyon Unit, Colorado River Storage Project, Transmission Line Divisio

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View Northeastward During Erection By Crane of An Experimental Guyed Aluminum H-Frame Structure, Type 11, Tower 428; Linemen Guided Socket of Leg to Ball on Foundation; Note Sm 60, Tower 429, in Right

View Northeastward During Erection By Crane of An Experimental Guyed Aluminum H-Frame Structure, Type 11, Tower 428; Linemen Guided Socket of Leg to Ball on Foundation; Note Sm 60, Tower 429, in Right

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View Northward During Erection of an Experimental Guyed Aluminum H-Frame Structure, Type 11, Tower 428; Tower is Fully Supported By Crane and is Being Guided to Footings By Workmen as the Crane Swings

View Northward During Erection of an Experimental Guyed Aluminum H-Frame Structure, Type 11, Tower 428; Tower is Fully Supported By Crane and is Being Guided to Footings By Workmen as the Crane Swings

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View Northwestward During Erection of Experimental Guyed Aluminum H-Frame Structure, Type 11, Tower 428; Glen Canyon Unit, Colorado River Storage Project, Transmission Line Division

View Northwestward During Erection of Experimental Guyed Aluminum H-Frame Structure, Type 11, Tower 428; Glen Canyon Unit, Colorado River Storage Project, Transmission Line Division

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View Westward Showing Slings Attached to an Experimental Guyed Aluminum H Frame Structure Type 11, Tower 428 Preparatory to Erection By Crane; Glen Canyon Unit, Colorado River Storage Project, Transmi

View Westward Showing Slings Attached to an Experimental Guyed Aluminum H Frame Structure Type 11, Tower 428 Preparatory to Erection By Crane; Glen Canyon Unit, Colorado River Storage Project, Transmi

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View Northwestward as Erection by Crane is Initiated on An Experimental Guyed Aluminum H-Frame Structure, Type 11, Tower 428; Note Signal Man in Foreground; Glen Canyon Unit, Colorado River Storage Pr

View Northwestward as Erection by Crane is Initiated on An Experimental Guyed Aluminum H-Frame Structure, Type 11, Tower 428; Note Signal Man in Foreground; Glen Canyon Unit, Colorado River Storage Pr

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Bell 204-B Helicopter Endeavoring to Lift Bridge and Section Between Waist and Bridge of a Type 13 (Similar to Conventional SM Tower) Aluminum Experimental Tower 452; Helicopter Unable to Lift Weight

Bell 204-B Helicopter Endeavoring to Lift Bridge and Section Between Waist and Bridge of a Type 13 (Similar to Conventional SM Tower) Aluminum Experimental Tower 452; Helicopter Unable to Lift Weight

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Bell 204-B Helicopter Preparing to Lift Bridge and Section Between Waist and Bridge of Type 13 (Similar to a Conventional SM Tower) Experimental Aluminum Tower 452; Glen Canyon Unit, Colorado River St

Bell 204-B Helicopter Preparing to Lift Bridge and Section Between Waist and Bridge of Type 13 (Similar to a Conventional SM Tower) Experimental Aluminum Tower 452; Glen Canyon Unit, Colorado River St

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Upper Body Section of a Type 13 (Similar to Conventional SM Tower) Experimental Aluminum Tower 452 Stabbed in Placed and Being Temporarily Bolted as Helicopter Prepare to Slack Off Slings Prior to Dro

Upper Body Section of a Type 13 (Similar to Conventional SM Tower) Experimental Aluminum Tower 452 Stabbed in Placed and Being Temporarily Bolted as Helicopter Prepare to Slack Off Slings Prior to Dro

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Upper Body Section of Type 13 (Similar to Conventional SM Tower) Experimental Aluminum Tower 452 Being Lowered Into Position By Signals From Foreman on Tower to Radioman on Ground Who Was in Radio Con

Upper Body Section of Type 13 (Similar to Conventional SM Tower) Experimental Aluminum Tower 452 Being Lowered Into Position By Signals From Foreman on Tower to Radioman on Ground Who Was in Radio Con

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Upper Body Section of Type 13 (Similar to Conventional SM Tower) Experimental Aluminum Tower 452 Approaches Lower Body Section Previously Erected By Crane; Men on Tower Belted Off and Are Wearing Foot

Upper Body Section of Type 13 (Similar to Conventional SM Tower) Experimental Aluminum Tower 452 Approaches Lower Body Section Previously Erected By Crane; Men on Tower Belted Off and Are Wearing Foot

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Upper Body Section of Type 13 (Similar to Conventional SM Tower) Experimental Aluminum Tower 452 Being Lifted Clear of Ground By a Bell 204-B Helicopter; Glen Canyon Unit, Colorado River Storage Proje

Upper Body Section of Type 13 (Similar to Conventional SM Tower) Experimental Aluminum Tower 452 Being Lifted Clear of Ground By a Bell 204-B Helicopter; Glen Canyon Unit, Colorado River Storage Proje

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Upper Cross-Arm Section of Type 15 Experimental Triangular Aluminum Tower 453 Set in Position By Use of Bell 204-B Helicopter; Section Will Be Temporarily Bolted and the Slings Dropped Prior to Comple

Upper Cross-Arm Section of Type 15 Experimental Triangular Aluminum Tower 453 Set in Position By Use of Bell 204-B Helicopter; Section Will Be Temporarily Bolted and the Slings Dropped Prior to Comple

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Bell 204-B Helicopter With Upper Cross-Arm Section of Type 15 Experimental Triangular Aluminum Tower 453 Approaches Previously Erected Portion of Tower; Glen Canyon Unit, Colorado River Storage Projec

Bell 204-B Helicopter With Upper Cross-Arm Section of Type 15 Experimental Triangular Aluminum Tower 453 Approaches Previously Erected Portion of Tower; Glen Canyon Unit, Colorado River Storage Projec

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Bell 204-B Helicopter Raises Upper Cross-Arm Section of Type 15 Experimental Triangular Aluminum Tower 453 Clear of Ground and Is Proceeding Toward Tower Sections Previously Erected in Like Manner; Gl

Bell 204-B Helicopter Raises Upper Cross-Arm Section of Type 15 Experimental Triangular Aluminum Tower 453 Clear of Ground and Is Proceeding Toward Tower Sections Previously Erected in Like Manner; Gl

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Lower Cross-Arm Section of Type 15 Experimental Triangular Aluminum Tower 453 in Position and is Being Temporarily Bolted Preparatory to Drop of Slings By a Bell 204-B Helicopter; Glen Canyon Unit, Co

Lower Cross-Arm Section of Type 15 Experimental Triangular Aluminum Tower 453 in Position and is Being Temporarily Bolted Preparatory to Drop of Slings By a Bell 204-B Helicopter; Glen Canyon Unit, Co

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Lower Cross-Arm Section of Type 15 Experimental Triangular Aluminum Tower 453 Approaching Top of Upper Body Section; Men on Tower Are Belted Off and Are Wearing Football Helmets With Chin Straps For H

Lower Cross-Arm Section of Type 15 Experimental Triangular Aluminum Tower 453 Approaching Top of Upper Body Section; Men on Tower Are Belted Off and Are Wearing Football Helmets With Chin Straps For H

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Bell Helicopter 204-B Lifts Lower Cross-Arm Section of Type 15; Experimental Triangular Aluminum Tower 453 Clear of Ground; Note Tag Lines For Control From Ground; Glen Canyon Unit, Colorado River Sto

Bell Helicopter 204-B Lifts Lower Cross-Arm Section of Type 15; Experimental Triangular Aluminum Tower 453 Clear of Ground; Note Tag Lines For Control From Ground; Glen Canyon Unit, Colorado River Sto

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Upper Body Section of Type 15 Experimental Triangular Aluminum Tower 454 Temporarily Bolted in Place and Helicopter Has Lowered Slings Preparatory to Dropping Them Clear; Note Men on Far Side of Tower

Upper Body Section of Type 15 Experimental Triangular Aluminum Tower 454 Temporarily Bolted in Place and Helicopter Has Lowered Slings Preparatory to Dropping Them Clear; Note Men on Far Side of Tower

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Upper Body Section of Type 15 Experimental Triangular Aluminum Tower 454 in Place and Has Been Stabbed; Men Are Quickly Inserting Temporary Bolting; Helicopter Still Supporting Most of the Weight; Gle

Upper Body Section of Type 15 Experimental Triangular Aluminum Tower 454 in Place and Has Been Stabbed; Men Are Quickly Inserting Temporary Bolting; Helicopter Still Supporting Most of the Weight; Gle

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Upper Body Section of Type 15 Experimental Triangular Aluminum Tower 454 Is Above Lower Body Section and is Being Lowered into Position By Use of Signals From the Foreman-Signalman in Dark Clothing on

Upper Body Section of Type 15 Experimental Triangular Aluminum Tower 454 Is Above Lower Body Section and is Being Lowered into Position By Use of Signals From the Foreman-Signalman in Dark Clothing on

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Erection of Type 15 Experimental Triangular Aluminum Tower 454; 204-B Bell Helicopter Has Raised the Upper Body Section Clear of Ground; Glen Canyon Unit, Colorado River Storage Project, Transmission

Erection of Type 15 Experimental Triangular Aluminum Tower 454; 204-B Bell Helicopter Has Raised the Upper Body Section Clear of Ground; Glen Canyon Unit, Colorado River Storage Project, Transmission

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Erection of Type 15 Experimental Triangular Aluminum Tower 454; 204-B Bell Helicopter Preparing to Pick Upper Body Section; Lower Section Previously Erected By Crane; Men on Tower Belted Off; Foreman-

Erection of Type 15 Experimental Triangular Aluminum Tower 454; 204-B Bell Helicopter Preparing to Pick Upper Body Section; Lower Section Previously Erected By Crane; Men on Tower Belted Off; Foreman-

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View Taken January 31, 1964, Showing the Condition of All Coarse Aggregate Stockpiles; During the Period from December 26, 1963 through January 25, 1964, 4,430 Cubic Yards of Concrete Were Placed Requ

View Taken January 31, 1964, Showing the Condition of All Coarse Aggregate Stockpiles; During the Period from December 26, 1963 through January 25, 1964, 4, 430 Cubic Yards of Concrete Were Placed Requ