cable
chimney
construction
danger
device
electric power
electrical
electricity
energy
engineering
environment
equipment
factory
funnel
gas
global warming
heat
heating plant
high voltage
hot
industry
iron
machinery
manual
manufacturing
mechanical
metal
pole
pollution
power
power distribution
power line
pressure
production
smoke
smokestack
stack
station
steam
steeple
technology
tower
transformer
transmission
volt
voltage
warming
wire
work