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    Lab technician adding reagent to sample while measuring pH — Stock Photo
    Lab technician adding reagent to sample while measuring pH
    Industrial engineer climbing ladder with safety cage at a power plant — Stock Photo
    Industrial engineer climbing ladder with safety cage at a power plant
    Construction supervisor watching as old watermain is removed from street — Stock Photo
    Construction supervisor watching as old watermain is removed from street
    Water department technician opening fire hydrant to flush water pipes — Stock Photo
    Water department technician opening fire hydrant to flush water pipes
    Carpenter using a circular saw — Stock Photo
    Carpenter using a circular saw
    Cable lineman on ladder fixing dangling wires — Stock Photo
    Cable lineman on ladder fixing dangling wires
    Construction foreman guiding excavator operator — Stock Photo
    Construction foreman guiding excavator operator
    Water department technician opening fire hydrant to flush water mains — Stock Photo
    Water department technician opening fire hydrant to flush water mains
    Carpenter cutting beam to length using a circular saw — Stock Photo
    Carpenter cutting beam to length using a circular saw
    Satellite dish and power transmission towers — Stock Photo
    Satellite dish and power transmission towers
    Lab technician recording data from sample test — Stock Photo
    Lab technician recording data from sample test
    Communications worker getting supplies from truck — Stock Photo
    Communications worker getting supplies from truck
    Construction worker cutting water main to length with gas powered saw — Stock Photo
    Construction worker cutting water main to length with gas powered saw
    Carpenter measuring board length for house construction — Stock Photo
    Carpenter measuring board length for house construction
    Carpenter preparing bevel cut for a rafter of a house — Stock Photo
    Carpenter preparing bevel cut for a rafter of a house
    Construction worker guiding water main into place — Stock Photo
    Construction worker guiding water main into place
    Construction workers using battery powered wrench to secure water main section with bolts — Stock Photo
    Construction workers using battery powered wrench to secure water main section with bolts
    Carpenter cutting beam to length using a circular saw — Stock Photo
    Carpenter cutting beam to length using a circular saw
    Engineer in electric power plant reviewing sensor readings — Stock Photo
    Engineer in electric power plant reviewing sensor readings
    Carpenter placing a rafter for house construction — Stock Photo
    Carpenter placing a rafter for house construction
    Engineer in electric power plant inspecting condenser room piping — Stock Photo
    Engineer in electric power plant inspecting condenser room piping
    Engineer in electric power plant using his smartphone inside condenser room — Stock Photo
    Engineer in electric power plant using his smartphone inside condenser room
    Construction worker on site carrying ladder — Stock Photo
    Construction worker on site carrying ladder
    Construction workers pouring water to prime a pump — Stock Photo
    Construction workers pouring water to prime a pump
    Engineer in electric power plant inspecting condenser piping — Stock Photo
    Engineer in electric power plant inspecting condenser piping
    Carpenter a hammer lifting rafter for house construction — Stock Photo
    Carpenter a hammer lifting rafter for house construction
    Carpenter using a circular saw for house construction — Stock Photo
    Carpenter using a circular saw for house construction
    Construction foreman guiding placement of shoring into hole — Stock Photo
    Construction foreman guiding placement of shoring into hole
    Carpenter cutting bevel on rafter with a circular saw — Stock Photo
    Carpenter cutting bevel on rafter with a circular saw
    Lab technician adding liquid to graduated cylinder — Stock Photo
    Lab technician adding liquid to graduated cylinder
    Carpenter reviewing exterior framing of a house — Stock Photo
    Carpenter reviewing exterior framing of a house
    Carpenter placing a rafter for house construction — Stock Photo
    Carpenter placing a rafter for house construction
    Constructions workers inspecting project — Stock Photo
    Constructions workers inspecting project
    Carpenter placing a rafter for house construction — Stock Photo
    Carpenter placing a rafter for house construction
    Construction worker attaching lifting strap to excavator bucket — Stock Photo
    Construction worker attaching lifting strap to excavator bucket
    Lab technician igniting Bunsen burner — Stock Photo
    Lab technician igniting Bunsen burner
    Carpenter measuring board length — Stock Photo
    Carpenter measuring board length
    Communications worker preparing to climb pole at his truck — Stock Photo
    Communications worker preparing to climb pole at his truck
    Construction workers watching excavators digging hole on watermain project — Stock Photo
    Construction workers watching excavators digging hole on watermain project
    Carpenter measuring board length — Stock Photo
    Carpenter measuring board length
    Water department technician coiling hose used to flush hydrant — Stock Photo
    Water department technician coiling hose used to flush hydrant
    Engineer in electric power plant inspecting condenser piping — Stock Photo
    Engineer in electric power plant inspecting condenser piping
    Industrial engineer turning valve on pipe at fuel tank at a power plant — Stock Photo
    Industrial engineer turning valve on pipe at fuel tank at a power plant
    Lab technician opening sterilization tank — Stock Photo
    Lab technician opening sterilization tank
    Lineman on a pole working on phone and cable wires — Stock Photo
    Lineman on a pole working on phone and cable wires
    Communications worker examining cables on power pole — Stock Photo
    Communications worker examining cables on power pole
    Carpenter climbing ladder to upper level — Stock Photo
    Carpenter climbing ladder to upper level
    Construction workers inspecting rusted water main section — Stock Photo
    Construction workers inspecting rusted water main section
    Engineer at electric power plant carrying coil of wire at storage area — Stock Photo
    Engineer at electric power plant carrying coil of wire at storage area
    Lab technician holding tray of calibrated samples — Stock Photo
    Lab technician holding tray of calibrated samples
    Construction worker smoothing rough edge of water main — Stock Photo
    Construction worker smoothing rough edge of water main
    Construction worker removing old watermain into bucket — Stock Photo
    Construction worker removing old watermain into bucket
    Water department technician installing a snow stake — Stock Photo
    Water department technician installing a snow stake
    Communications worker preparing to climb ladder for overhead wiring — Stock Photo
    Communications worker preparing to climb ladder for overhead wiring
    Carpenter measuring board length — Stock Photo
    Carpenter measuring board length
    Pest control technician at chemical storage container on truck — Stock Photo
    Pest control technician at chemical storage container on truck
    Communications worker adding cables to a bundle — Stock Photo
    Communications worker adding cables to a bundle
    Construction supervisor using electronic surveying rod — Stock Photo
    Construction supervisor using electronic surveying rod
    Carpenter carrying bevel cut rafters for dormer — Stock Photo
    Carpenter carrying bevel cut rafters for dormer
    Carpenter carrying a board for house construction — Stock Photo
    Carpenter carrying a board for house construction