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    Surprised students conducting exploding foam scientific experiment in classroom laboratory — Stock Photo
    Surprised students conducting exploding foam scientific experiment in classroom laboratory
    Liquid in bottles, test tubes and beakers in science laboratory classroom — Stock Photo
    Liquid in bottles, test tubes and beakers in science laboratory classroom
    Firemen working at fire station. — Stock Photo
    Firemen working at fire station.
    Portrait of butcher operating machine at meat factory — Stock Photo
    Portrait of butcher operating machine at meat factory
    Male designer wearing ear protectors, examining prototype in workshop — Stock Photo
    Male designer wearing ear protectors, examining prototype in workshop
    Side view of serious young doctor in protective mask and cap making surgery with instruments and crop nurse — Stock Photo
    Side view of serious young doctor in protective mask and cap making surgery with instruments and crop nurse
    Close-up of hands of scientist taking sample from culture in Petri dish. — Stock Photo
    Close-up of hands of scientist taking sample from culture in Petri dish.
    Male designer using caliper in workshop — Stock Photo
    Male designer using caliper in workshop
    Male worker attaching chain to equipment in factory — Stock Photo
    Male worker attaching chain to equipment in factory
    Steel workers operating crane in factory — Stock Photo
    Steel workers operating crane in factory
    Whitewater kayaker paddling large river rapids on a fast flowing river — Stock Photo
    Whitewater kayaker paddling large river rapids on a fast flowing river
    Female worker using laptop in factory — Stock Photo
    Female worker using laptop in factory
    Dried marijuana flower buds on table with analytical balance and moisture measuring device against protective glasses in lab — Stock Photo
    Dried marijuana flower buds on table with analytical balance and moisture measuring device against protective glasses in lab
    Supervisor and workers in steel factory — Stock Photo
    Supervisor and workers in steel factory
    Boy standing on sandy beach — Stock Photo
    Boy standing on sandy beach
    Construction workers preparing for excavator to lift water main into place — Stock Photo
    Construction workers preparing for excavator to lift water main into place
    Steel workers fastening crane chain to steel in factory — Stock Photo
    Steel workers fastening crane chain to steel in factory
    STAVANGER NORWAY OIL RIG WORKER — Stock Photo
    STAVANGER NORWAY OIL RIG WORKER
    Communications worker drilling access hole through exterior wall — Stock Photo
    Communications worker drilling access hole through exterior wall
    Smiling girl students examining liquid in test tube, conducting scientific experiment in laboratory classroom — Stock Photo
    Smiling girl students examining liquid in test tube, conducting scientific experiment in laboratory classroom
    Young woman wearing protective goggles in tanning booth. — Stock Photo
    Young woman wearing protective goggles in tanning booth.
    Two lumberjacks with chainsaw cutting dead tree in forest — Stock Photo
    Two lumberjacks with chainsaw cutting dead tree in forest
    Female scientist researching sample in petri dish under light microscope. — Stock Photo
    Female scientist researching sample in petri dish under light microscope.
    Technician carrying equipment and solution in sterile laboratory. — Stock Photo
    Technician carrying equipment and solution in sterile laboratory.
    Steel worker using large wrench in factory — Stock Photo
    Steel worker using large wrench in factory
    Man fishing carp — Stock Photo
    Man fishing carp
    Blond boy, about 8 years old, wearing a respirator to co-infect himself with a virus — Stock Photo
    Blond boy, about 8 years old, wearing a respirator to co-infect himself with a virus
    Hands of archaeologist analyzing charred wood in petri dish. — Stock Photo
    Hands of archaeologist analyzing charred wood in petri dish.
    Surgeons performing surgery in operating room — Stock Photo
    Surgeons performing surgery in operating room
    Firefighter poses with helmet looking at camera. — Stock Photo
    Firefighter poses with helmet looking at camera.
    Close-up of hands of microbiologist inoculating nutritive agar. — Stock Photo
    Close-up of hands of microbiologist inoculating nutritive agar.
    Female technician in yellow helmet working in factory — Stock Photo
    Female technician in yellow helmet working in factory
    Male foreman with clipboard explaining to worker in factory — Stock Photo
    Male foreman with clipboard explaining to worker in factory
    Hands of archaeologists reconstructing broken pottery in laboratory. — Stock Photo
    Hands of archaeologists reconstructing broken pottery in laboratory.
    Dentist showing model teeth to female patient in dental clinic — Stock Photo
    Dentist showing model teeth to female patient in dental clinic
    Hands of archaeologist analyzing charred wood in petri dish. — Stock Photo
    Hands of archaeologist analyzing charred wood in petri dish.
    Worker sanding steel in steel factory — Stock Photo
    Worker sanding steel in steel factory
    Man in wet-suit standing on shore with fishing harpoon spear. — Stock Photo
    Man in wet-suit standing on shore with fishing harpoon spear.
    Close-up of surgeon wearing surgical mask in hospital — Stock Photo
    Close-up of surgeon wearing surgical mask in hospital
    Close-up of archaeology researcher documenting lithics with camera in laboratory. — Stock Photo
    Close-up of archaeology researcher documenting lithics with camera in laboratory.
    Hands of police digital forensic science analyst examining confiscated mobile phone and taking investigation notes. — Stock Photo
    Hands of police digital forensic science analyst examining confiscated mobile phone and taking investigation notes.
    Portrait of a Caucasian male surfboard maker with long blond hair, standing in his studio, wearing protective headphones and looking at camera. — Stock Photo
    Portrait of a Caucasian male surfboard maker with long blond hair, standing in his studio, wearing protective headphones and looking at camera.
    Long exposure of female whitewater kayaker paddling rapids and surf on a fast flowing river. — Stock Photo
    Long exposure of female whitewater kayaker paddling rapids and surf on a fast flowing river.
    Portrait of butcher operating machine at meat factory — Stock Photo
    Portrait of butcher operating machine at meat factory
    Microbiologist using light microscope in laboratory — Stock Photo
    Microbiologist using light microscope in laboratory
    High angle underwater view of diver wearing wet suit and flippers, air bubbles rising. — Stock Photo
    High angle underwater view of diver wearing wet suit and flippers, air bubbles rising.
    Female butcher cleaning floor at meat factory — Stock Photo
    Female butcher cleaning floor at meat factory
    Construction worker using table saw in driveway — Stock Photo
    Construction worker using table saw in driveway
    Female scientist using equipment in laboratory. — Stock Photo
    Female scientist using equipment in laboratory.
    Dentist showing model teeth to female patient in dental clinic — Stock Photo
    Dentist showing model teeth to female patient in dental clinic
    Construction workers plastering ceiling in house — Stock Photo
    Construction workers plastering ceiling in house
    Smiling metal worker using sander in workshop — Stock Photo
    Smiling metal worker using sander in workshop
    Female digital forensic expert examining computer hard drive in police science laboratory. — Stock Photo
    Female digital forensic expert examining computer hard drive in police science laboratory.
    Portrait worker carrying piece in steel factory — Stock Photo
    Portrait worker carrying piece in steel factory
    Female power engineer with power cable — Stock Photo
    Female power engineer with power cable
    Steelworkers moving steel part in steel mill — Stock Photo
    Steelworkers moving steel part in steel mill
    Serious male engineers with flashlights examining steel pipe — Stock Photo
    Serious male engineers with flashlights examining steel pipe
    Professional welder in mask welding metal — Stock Photo
    Professional welder in mask welding metal
    Long exposure of male whitewater kayaker paddling and surfing large rapids on a fast flowing river. — Stock Photo
    Long exposure of male whitewater kayaker paddling and surfing large rapids on a fast flowing river.
    Side view of male scientist experimenting in laboratory — Stock Photo
    Side view of male scientist experimenting in laboratory