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    Heaps of coal placed in industrial area at factory for producing coke — Stock Photo
    Heaps of coal placed in industrial area at factory for producing coke
    Rusty flanged joints of pipe bolting together with metal nuts at plant — Stock Photo
    Rusty flanged joints of pipe bolting together with metal nuts at plant
    Closeup view of cooling pipe transferring liquid nitrogen surrounded by clouds of vapor on plant — Stock Photo
    Closeup view of cooling pipe transferring liquid nitrogen surrounded by clouds of vapor on plant
    Industrial pipes with cloudy sky illuminated at night — Stock Photo
    Industrial pipes with cloudy sky illuminated at night
    Industrial Pipes in a Power Plant — Stock Photo
    Industrial Pipes in a Power Plant
    Vaulted ceiling and Ducroquet/Cavaille-Coll organ of Aix-en-Provence Cathedral (Cathedrale Saint-Sauveur d'Aix-en-Provence); Aix-en-Provence, Provence, France — Stock Photo
    Vaulted ceiling and Ducroquet/Cavaille-Coll organ of Aix-en-Provence Cathedral (Cathedrale Saint-Sauveur d'Aix-en-Provence); Aix-en-Provence, Provence, France
    Industrial Pipes in a Power Plant — Stock Photo
    Industrial Pipes in a Power Plant
    Industrial Pipes in a Power Plant — Stock Photo
    Industrial Pipes in a Power Plant
    Pipeline in Eastern Iceland; Skutustadahreppur, Northeastern Region, Iceland — Stock Photo
    Pipeline in Eastern Iceland; Skutustadahreppur, Northeastern Region, Iceland
    Pipeline along a road; Iceland — Stock Photo
    Pipeline along a road; Iceland
    Pipeline on a hillside; Iceland — Stock Photo
    Pipeline on a hillside; Iceland
    Industrial Pipes in a Power Plant — Stock Photo
    Industrial Pipes in a Power Plant
    Trans-Alaska Pipeline, Interior Alaska in summertime; Fairbanks, Alaska, United States of America — Stock Photo
    Trans-Alaska Pipeline, Interior Alaska in summertime; Fairbanks, Alaska, United States of America
    Pipeline in Eastern Iceland; Skutustadahreppur, Northeastern Region, Iceland — Stock Photo
    Pipeline in Eastern Iceland; Skutustadahreppur, Northeastern Region, Iceland
    Organ Pipes, iron rich lava formations, Damaraland; Kunene Region, Namibia — Stock Photo
    Organ Pipes, iron rich lava formations, Damaraland; Kunene Region, Namibia
    Clean water falling on wet dirt near hill on cloudy day in nature in Iceland — Stock Photo
    Clean water falling on wet dirt near hill on cloudy day in nature in Iceland
    Mid section view of man working at a microbrewery, wearing a high visibility vest, inspecting a tank pipe. — Stock Photo
    Mid section view of man working at a microbrewery, wearing a high visibility vest, inspecting a tank pipe.
    Emissions from a stack fill the air at the end of a pipe; British Columbia, Canada — Stock Photo
    Emissions from a stack fill the air at the end of a pipe; British Columbia, Canada
    Metal piping against building wall — Stock Photo
    Metal piping against building wall
    Water pipes on brick wall — Stock Photo
    Water pipes on brick wall
    Seedling Growing in a Greenhouse, Close-up view — Stock Photo
    Seedling Growing in a Greenhouse, Close-up view
    Electrical piping against building wall — Stock Photo
    Electrical piping against building wall
    Orange gutter drain pipe against warehouse wall, close up — Stock Photo
    Orange gutter drain pipe against warehouse wall, close up
    Close up of metal piping on building wall — Stock Photo
    Close up of metal piping on building wall
    Metal electrical piping on building wall — Stock Photo
    Metal electrical piping on building wall
    Electrical wiring on building exterior — Stock Photo
    Electrical wiring on building exterior
    Orange gutter drain pipe against corrugated metal warehouse wall, close up — Stock Photo
    Orange gutter drain pipe against corrugated metal warehouse wall, close up
    Gas turbine exhaust stack at an Electric cogeneration plant — Stock Photo
    Gas turbine exhaust stack at an Electric cogeneration plant
    Hot water pipe ducting at an electric plant — Stock Photo
    Hot water pipe ducting at an electric plant
    Cropped image of Water department technician removing flushing adapter — Stock Photo
    Cropped image of Water department technician removing flushing adapter
    Male instructor and students in shop class workshop — Stock Photo
    Male instructor and students in shop class workshop
    Pile of discarded industrial tubing, coiled in recycling container — Stock Photo
    Pile of discarded industrial tubing, coiled in recycling container
    Construction worker holding water main pipe suspended by excavator — Stock Photo
    Construction worker holding water main pipe suspended by excavator
    Pest control technician with portable spray rig using spray nozzle and hose — Stock Photo
    Pest control technician with portable spray rig using spray nozzle and hose
    Male student working with copper in shop class workshop — Stock Photo
    Male student working with copper in shop class workshop
    Industrial valves and a motor in a sludge digester — Stock Photo
    Industrial valves and a motor in a sludge digester
    Male student using carpenter rule in shop class workshop — Stock Photo
    Male student using carpenter rule in shop class workshop
    Male instructor watching students welding in workshop — Stock Photo
    Male instructor watching students welding in workshop
    Engineer connecting O2 electrochemical sensor probe cable to meter in water treatment plant — Stock Photo
    Engineer connecting O2 electrochemical sensor probe cable to meter in water treatment plant
    Male instructor helping students in shop class workshop — Stock Photo
    Male instructor helping students in shop class workshop
    Close-up view of sediments on rocks in Riotinto, Huelva — Stock Photo
    Close-up view of sediments on rocks in Riotinto, Huelva
    Pest control technician pulling hose from reel in service truck — Stock Photo
    Pest control technician pulling hose from reel in service truck
    Male student using carpenters rule in shop class workshop — Stock Photo
    Male student using carpenters rule in shop class workshop
    Pest control technician mixing chemicals with water into chemical tank — Stock Photo
    Pest control technician mixing chemicals with water into chemical tank
    Fish sculpture being heated by burner in workshop — Stock Photo
    Fish sculpture being heated by burner in workshop
    Construction worker guiding water main into place — Stock Photo
    Construction worker guiding water main into place
    Craftsman preparing fish sculpture in workshop — Stock Photo
    Craftsman preparing fish sculpture in workshop
    Craftsman preparing fish sculpture in workshop — Stock Photo
    Craftsman preparing fish sculpture in workshop
    Pest control technician using high pressure spray gun and hose with heavy duty gloves — Stock Photo
    Pest control technician using high pressure spray gun and hose with heavy duty gloves
    Pest control technician using high pressure spray gun and hose with heavy duty gloves — Stock Photo
    Pest control technician using high pressure spray gun and hose with heavy duty gloves
    Cropped image of Water department technician shutting fire hydrant to flush water pipes — Stock Photo
    Cropped image of Water department technician shutting fire hydrant to flush water pipes
    Young male student using vise grip in shop class workshop — Stock Photo
    Young male student using vise grip in shop class workshop
    Side view of stylish guy in hat smoking pipe and elegant woman in cap reading volume and sitting on rocks near beacon — Stock Photo
    Side view of stylish guy in hat smoking pipe and elegant woman in cap reading volume and sitting on rocks near beacon
    Water department engineer standing in chemical treatment room — Stock Photo
    Water department engineer standing in chemical treatment room
    Water department technician reinstalling caps on fire hydrant — Stock Photo
    Water department technician reinstalling caps on fire hydrant
    Young ballerina spinning in pipe — Stock Photo
    Young ballerina spinning in pipe
    Female power engineer checking condensation at power station — Stock Photo
    Female power engineer checking condensation at power station
    Male students using equipment in shop class workshop — Stock Photo
    Male students using equipment in shop class workshop
    Attentive craftsman holding burner in workshop — Stock Photo
    Attentive craftsman holding burner in workshop
    Young ballerina spinning in pipe — Stock Photo
    Young ballerina spinning in pipe