agree

agreement

approved

architect

caucasian

electrician

electricity

energy

engineer

engineering

environmental

expertise

fuel

gesture

global

good

hardhat

head

helmet

industry

job

line

man

management

nods

number

occupation

oil

outdoor

petrochemical

pipe

plant

portrait

power

professional

refinery

regulator

repairing

say

shaking

station

sure

technician

technology

thermal

work

worker

yes