Worker trying to open/close the valve
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Open valve or closed. a man wearing the yellow helmet, while working in oil or gas refinery, closing and opening the pipeline red valve. Example of shale gas exploration

Author: Plrang Art - All Rights Reserved 
What's in this image
3d
3d man
biofuel
biogas
cartoon
character
close
control
engineering
figure
fuel
gas
gaseous
handle
hands
helmet
human
industrial
industry
knob
knobs
line
main
natural
natural gas
oil
open
petrol
pipe
pipeline
pressure
pump
red
shale
stop
supply
tap
technology
tubular
valve
work
worker
yellow