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Wells Dam, Pipes, Valves, TPHV01P06_18Control Room, Interior, Inside, Indoors, Dials, Instruments, Panel, Wells Dam, TPHV01P06_19Control Room, Wells Dam, TPHV01P07_01Indoors, Dials, Instruments, Panel, Electronics, switches, Control Room, Wells Dam, TPHV01P07_02Indoors, Dials, Instruments, Panel, Electronics, switches, Control Room, Wells Dam, TPHV01P07_03Indoors, Dials, Instruments, Panel, Electronics, switches, Control Room, Wells Dam, TPHV01P07_04Lights, Dials, Instruments, Panel, Electronics, switches, Control Room, Wells Dam, TPHV01P07_05Lights, Dials, Instruments, Panel, Electronics, switches, Control Room, Wells Dam, TPHV01P07_06Lights, Dials, Instruments, Panel, Electronics, switches, Control Room, Wells Dam, TPHV01P07_06.0144Lights, Dials, Instruments, Panel, Electronics, switches, Control Room, Wells Dam, TPHV01P07_06.1716Lights, Dials, Instruments, Panel, Electronics, switches, Control Room, Wells Dam, TPHV01P07_06B.1716Control Room, Wells Dam, TPHV01P07_07Control Room, Wells Dam, TPHV01P07_08Control Room, Wells Dam, TPHV01P07_09Power System Stabalizer, Dials, buttons, Control Room, Wells Dam, TPHV01P07_10Power System Stabalizer, Dials, buttons, Control Room, Wells Dam, TPHV01P07_11.1716Indoors, Instruments, Panel, Power System Stabalizer, Dials, buttons, Control Room, Wells Dam, TPHV01P07_11BFrequency Deviation, Control Room, Paper Drum Plotter, Wells Dam, TPHV01P07_12Control Room, Wells Dam, TPHV01P07_13Control Room, Wells Dam, TPHV01P07_14Control Room, Wells Dam, TPHV01P07_15.1716Control Room, Wells Dam, TPHV01P07_16Control Room, Wells Dam, TPHV01P07_17Control Room, Wells Dam, TPHV01P07_18Control Room, Wells Dam, TPHV01P07_19Control Room, Wells Dam, TPHV01P08_01Control Room, Wells Dam, TPHV01P08_01.0144Control Room, Wells Dam, TPHV01P08_02Control Room, Wells Dam, TPHV01P08_03Control Room, Wells Dam, TPHV01P08_04Control Room, Wells Dam, TPHV01P08_05Control Room, Wells Dam, TPHV01P08_06Control Room, Wells Dam, TPHV01P08_07Control Room, Wells Dam, 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TPHV02P02_18Hoover Dam, TPHV02P02_19Hoover Dam, TPHV02P03_01Hoover Dam, TPHV02P03_02Hoover Dam, TPHV02P03_03Hoover Dam, TPHV02P03_04Hoover Dam, TPHV02P03_05The Dalles, Oregon, Columbia River, TPHV02P03_06Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P01_01Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P01_07Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P04_12Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P04_13Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P04_14Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P04_15Sutro Tower, looking-up, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P07_04Sutro Tower, looking up, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P07_05Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P07_08Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P07_09Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P07_10.1716Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P07_11Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P07_12Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P07_13Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P07_14.1716Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P07_15Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P07_16Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P07_17Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P07_18Sutro Tower, Looking-Down, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P07_19Sutro Tower, Looking-Down, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P08_01Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P11_13Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P11_14Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P11_14BSutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P11_15Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P11_15BSutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P11_16Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P11_16BSutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P11_17Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P15_03Sutro Tower, twin towers on Twin Peaks, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P15_09Sutro Tower, twin towers on Twin Peaks, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P15_10Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV02P02_16Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV02P02_17Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV02P02_18Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV02P02_19Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV02P03_01Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV02P06_02Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV02P06_05Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV02P06_06northern Alaska, Bargers, Oil Pipeline Construction, Prudhoe Bay, Pusher Tugs, TSWV01P03_19Nora Bulk Cargo Ship, Canal, TSWV02P14_15Round, Circular, Circle, UFIV01P01_16Round, Circular, Circle, UFIV01P01_17Round, Circular, Circle, UFIV01P01_18Round, Circular, Circle, UFIV01P01_19Buddha, Statue, UFIV01P03_11Buddha, Statue, UFIV01P03_11BBuddha, Statue, UFIV01P03_11BWBuddha, Statue, UFIV01P03_11BWBSeeing, Sight, UFIV01P04_12Seeing, Sight, UFIV01P04_12BSeeing, Sight, UFIV01P04_12CEarth and the Sun and the Moon, Celestial Orbits, Blue Marble, UPEV01P05_03Space Shuttle Mover, Tractor, USRV01P04_12VBSV03P02_17VBSV03P02_18Eyes, Eyeball, VCEV01P14_18Parking Meter, Alameda, VCRV17P02_11Oklahoma Veterans Memorial Highway System, VCRV17P11_03Tractor Plowing Snow, , VCSV01P01_15Tractor Plowing Snow, VCSV01P01_16Pacer 300, Motor Grader Snow Plow, wheeled, earthmover, VCSV01P01_17.0568Truck Plowing Snow, lower peninsula, VCSV01P01_18.0567Truck Plowing Snow, lower peninsula, VCSV01P01_18B.0567Truck Plowing Snow, lower peninsula, VCSV01P01_19Arizona Highways, Plowing Snow, VCSV01P02_01Arizona Highways, Plowing Snow, VCSV01P02_02Arizona Highways, Plowing Snow, VCSV01P02_03Mack Truck snowplow outline, line drawing, shape, VCSV01P04_01OSyracuse, Truck Plowing Snow, VCSV01P02_04Mailbox, Truck Plowing Snow, Syracuse, VCSV01P02_05Mailbox, Truck Plowing Snow, Syracuse, VCSV01P02_06
Wells Dam, Pipes, Valves, TPHV01P06_18Control Room, Interior, Inside, Indoors, Dials, Instruments, Panel, Wells Dam, TPHV01P06_19Control Room, Wells Dam, TPHV01P07_01Indoors, Dials, Instruments, Panel, Electronics, switches, Control Room, Wells Dam, TPHV01P07_02Indoors, Dials, Instruments, Panel, Electronics, switches, Control Room, Wells Dam, TPHV01P07_03Indoors, Dials, Instruments, Panel, Electronics, switches, Control Room, Wells Dam, TPHV01P07_04Lights, Dials, Instruments, Panel, Electronics, switches, Control Room, Wells Dam, TPHV01P07_05Lights, Dials, Instruments, Panel, Electronics, switches, Control Room, Wells Dam, TPHV01P07_06Lights, Dials, Instruments, Panel, Electronics, switches, Control Room, Wells Dam, TPHV01P07_06.0144Lights, Dials, Instruments, Panel, Electronics, switches, Control Room, Wells Dam, TPHV01P07_06.1716Lights, Dials, Instruments, Panel, Electronics, switches, Control Room, Wells Dam, TPHV01P07_06B.1716Control Room, Wells Dam, TPHV01P07_07Control Room, 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Blades, Propeller, Wells Dam, TPHV01P12_15.1716Rotor, Kaplan Turbine Blades, Propeller, Wells Dam, TPHV01P12_15B.1716Rotor, Kaplan Turbine Blades, Propeller, Wells Dam, TPHV01P12_16Rotor, Kaplan Turbine Blades, Propeller, Wells Dam, TPHV01P12_17Rotor, Kaplan Turbine Blades, Propeller, Wells Dam, TPHV01P12_18Rotor, Kaplan Turbine Blades, Propeller, Wells Dam, TPHV01P12_19Gorge Dam, Washington, TPHV01P13_01Gorge Dam, Washington, TPHV01P13_02Control Room, Wells Dam, TPHV01P13_03Turbine, axel, crankshaft, transmission, Wells Dam, TPHV01P13_04Gantry Crane, Wells Dam, TPHV01P13_05Insulators, Wells Dam, TPHV01P13_06.1716Insulators, Wells Dam, TPHV01P13_06BInsulators, Wells Dam, TPHV01P13_07Insulators, Wells Dam, TPHV01P13_08Insulators, Wells Dam, TPHV01P13_09Insulators, Wells Dam, TPHV01P13_10Wells Dam, TPHV01P13_11Wells Dam, TPHV01P13_12Insulators, Wells Dam, TPHV01P13_13Insulators, Wells Dam, TPHV01P13_14Generators, Wells Dam, TPHV01P13_15Water Pump Plant, Valdez, TPHV01P13_16Water Pump Plant, Valdez, TPHV01P13_17Pumping Station, Pipeline, TPHV01P13_18Pipeline, Pipes, Pumping, TPHV01P13_19.1716Pipeline, Pipes, Pumping, TPHV01P14_01Fontana Dam, Little Tennessee River, North Carolina, TVA, Tennessee Valley Authority, TPHV01P14_02Fontana Dam, Little Tennessee River, North Carolina, TVA, Tennessee Valley Authority, TPHV01P14_03.1716Woodland, Fontana Dam, Little Tennessee River, North Carolina, TVA, Tennessee Valley Authority, autumn, TPHV01P14_04Fontana Dam, Sluice, Little Tennessee River, North Carolina, TVA, Tennessee Valley Authority, TPHV01P14_05Fontana Dam, Little Tennessee River, North Carolina, TVA, Tennessee Valley Authority, TPHV01P14_06Fontana Dam, Little Tennessee River, North Carolina, TVA, Tennessee Valley Authority, TPHV01P14_07Fontana Dam, Little Tennessee River, North Carolina, TVA, Tennessee Valley Authority, TPHV01P14_08Fontana Dam, Little Tennessee River, North Carolina, TVA, Tennessee Valley Authority, TPHV01P14_09Glen Canyon Dam, Page Arizona, TPHV01P14_10Lake Powell, Glen Canyon Dam, concrete arch-gravity dam, Page Arizona, TPHV01P14_11Lake Powell, Glen Canyon Dam, concrete arch-gravity dam, Page Arizona, TPHV01P14_12Glen Canyon Dam, concrete arch-gravity dam, Page Arizona, TPHV01P14_13Glen Canyon Dam, concrete arch-gravity dam, Page Arizona, TPHV01P14_14.1716Glen Canyon Dam, Page Arizona, Visitors Center, TPHV01P14_15Pipeline, North Fork of the Feather River, Belden, TPHV01P14_16Pipeline, North Fork of the Feather River, Belden, TPHV01P14_17Pipeline, North Fork of the Feather River, Belden, TPHV01P14_18Shasta Lake Dam, California, TPHV01P14_19Shasta Lake Dam, California, TPHV01P15_01Shasta Lake Dam, California, TPHV01P15_02Dam in Panama, Spillway, TPHV01P15_03Ataturk Dam, Euphrates River, Turkey, TPHV01P15_04Ataturk Dam, Euphrates River, Turkey, TPHV01P15_05Flaming Gorge Dam, Plaque, Colorado River Storage Project, marker, TPHV01P15_06Flaming Gorge Dam, Colorado River Storage Project, TPHV01P15_07Hoover Dam, TPHV01P15_08Power House, Hoover Dam, Colorado River, TPHV01P15_09Lake Mead, Hoover Dam, TPHV01P15_10Lake Mead, Hoover Dam, Hills, Moutains, TPHV01P15_11Colorado River, Lake Mead, Hoover Dam, August 1997, TPHV01P15_12Hoover Dam, Water Intake, Lake Mead, Cars, TPHV01P15_13Hoover Dam, TPHV01P15_14Hoover Dam, TPHV01P15_15Pulleys, Cable, Wheels, Hoover Dam, TPHV01P15_16Pulleys, Cable, Wheels, Hoover Dam, TPHV01P15_17Pulleys, Cable, Wheels, Hoover Dam, TPHV01P15_18Pulleys, Cable, Wheels, Hoover Dam, Lake Mead, TPHV01P15_19Water Intake Towers, Lake Mead, Hoover Dam, Cars, TPHV02P01_01Glen Canyon Dam, concrete arch-gravity dam, Page, Arizona, TPHV02P01_02.0935concrete arch-gravity dam, Glen Canyon Dam, Page, Arizona, TPHV02P01_03.0935Glen Canyon Dam, concrete arch-gravity dam, Page, Arizona, TPHV02P01_04Shasta Dam, California, TPHV02P01_05Bubbling Water, river, Shasta Dam, Fresno County, California, TPHV02P01_06Shasta Dam, Shasta Lake, California, TPHV02P01_07Shasta Dam, Shasta Lake, California, TPHV02P01_08River, Shasta Dam, Shasta Lake, Summer, drought, California, TPHV02P01_09Salto Grande Hydroelectric Plant, Salto Grande Bi-National Hydroelectric Centra, Salto, TPHV02P01_10Salto Grande Hydroelectric Plant, Salto Grande Bi-National Hydroelectric Centra, Salto, TPHV02P01_11Salto Grande Hydroelectric Plant, Salto Grande Bi-National Hydroelectric Centra, Salto, TPHV02P01_12Pipeline, Salto Grande Hydroelectric Plant, clouds, Salto, TPHV02P01_13Salto Grande Hydroelectric Plant, Salto, TPHV02P01_14Kaplan Turbine, Rotor Turbine, Salto Grande Hydroelectric Plant, Salto Grande Bi-National Hydroelectric Centra, Salto, TPHV02P01_15Kaplan Turbine, Rotor Turbine, Salto Grande Hydroelectric Plant, Salto Grande Bi-National Hydroelectric Centra, Salto, TPHV02P01_16Water Intake Towers, Lake Mead, Hoover Dam, TPHV02P01_17Hoover Dam, Lake Mead, TPHV02P01_18Hoover Dam, Lake Mead, TPHV02P01_19Water Intake Towers, Lake Mead, Hoover Dam, Colorado River, TPHV02P02_01Water Intake Towers, Lake Mead, Hoover Dam, Colorado River, TPHV02P02_02Water Intake Towers, Lake Mead, Hoover Dam, Colorado River, TPHV02P02_03Water Intake Towers, Lake Mead, Hoover Dam, Colorado River, TPHV02P02_04Water Intake Towers, Lake Mead, Hoover Dam, Colorado River, TPHV02P02_05Water Intake Towers, Hoover Dam, Lake Mead, TPHV02P02_06Water Intake Towers, Hoover Dam, TPHV02P02_07water reflection of Water Intake Towers, Hoover Dam, TPHV02P02_08water reflection of Water Intake Towers, Hoover Dam, TPHV02P02_09water reflection of Water Intake Towers, Hoover Dam, TPHV02P02_10Water Intake Towers, Lake Mead, Hoover Dam, Colorado River, TPHV02P02_11Hills, Mountains, Water Reflection at Hoover Dam, TPHV02P02_12Water Intake Towers, Hoover Dam, TPHV02P02_13Water Intake Towers, Lake Mead, Hoover Dam, TPHV02P02_14Road Across Hoover Dam, TPHV02P02_15Art-deco Water Intake Towers, Hoover Dam, March 17 2000, TPHV02P02_16Water Intake Tower, Hoover Dam, TPHV02P02_17Water Intake Towers, Hoover Dam, Lake Mead, TPHV02P02_18Hoover Dam, TPHV02P02_19Hoover Dam, TPHV02P03_01Hoover Dam, TPHV02P03_02Hoover Dam, TPHV02P03_03Hoover Dam, TPHV02P03_04Hoover Dam, TPHV02P03_05The Dalles, Oregon, Columbia River, TPHV02P03_06Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P01_01Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P01_07Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P04_12Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P04_13Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P04_14Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P04_15Sutro Tower, looking-up, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P07_04Sutro Tower, looking up, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P07_05Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P07_08Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P07_09Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P07_10.1716Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P07_11Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P07_12Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P07_13Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P07_14.1716Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P07_15Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P07_16Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P07_17Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P07_18Sutro Tower, Looking-Down, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P07_19Sutro Tower, Looking-Down, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P08_01Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P11_13Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P11_14Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P11_14BSutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P11_15Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P11_15BSutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P11_16Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P11_16BSutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P11_17Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P15_03Sutro Tower, twin towers on Twin Peaks, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P15_09Sutro Tower, twin towers on Twin Peaks, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV01P15_10Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV02P02_16Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV02P02_17Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV02P02_18Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV02P02_19Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV02P03_01Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV02P06_02Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV02P06_05Sutro Tower, Antenna, Structural system Truss tower, telecommunications, telecom, TRAV02P06_06northern Alaska, Bargers, Oil Pipeline Construction, Prudhoe Bay, Pusher Tugs, TSWV01P03_19Nora Bulk Cargo Ship, Canal, TSWV02P14_15Round, Circular, Circle, UFIV01P01_16Round, Circular, Circle, UFIV01P01_17Round, Circular, Circle, UFIV01P01_18Round, Circular, Circle, UFIV01P01_19Buddha, Statue, UFIV01P03_11Buddha, Statue, UFIV01P03_11BBuddha, Statue, UFIV01P03_11BWBuddha, Statue, UFIV01P03_11BWBSeeing, Sight, UFIV01P04_12Seeing, Sight, UFIV01P04_12BSeeing, Sight, UFIV01P04_12CEarth and the Sun and the Moon, Celestial Orbits, Blue Marble, UPEV01P05_03Space Shuttle Mover, Tractor, USRV01P04_12VBSV03P02_17VBSV03P02_18Eyes, Eyeball, VCEV01P14_18Parking Meter, Alameda, VCRV17P02_11Oklahoma Veterans Memorial Highway System, VCRV17P11_03Tractor Plowing Snow, , VCSV01P01_15Tractor Plowing Snow, VCSV01P01_16Pacer 300, Motor Grader Snow Plow, wheeled, earthmover, VCSV01P01_17.0568Truck Plowing Snow, lower peninsula, VCSV01P01_18.0567Truck Plowing Snow, lower peninsula, VCSV01P01_18B.0567Truck Plowing Snow, lower peninsula, VCSV01P01_19Arizona Highways, Plowing Snow, VCSV01P02_01Arizona Highways, Plowing Snow, VCSV01P02_02Arizona Highways, Plowing Snow, VCSV01P02_03Mack Truck snowplow outline, line drawing, shape, VCSV01P04_01OSyracuse, Truck Plowing Snow, VCSV01P02_04Mailbox, Truck Plowing Snow, Syracuse, VCSV01P02_05Mailbox, Truck Plowing Snow, Syracuse, VCSV01P02_06
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