an engineer using a protractor to measure angles on a blueprint, while workers erect steel beams on a construction site
an engineer using a protractor to measure angles on a blueprint, while workers erect steel beams on a construction site
an engineer using a protractor to measure angles on a blueprint, while workers erect steel beams on a construction site
three construction workers standing in front of a large circular structure
a black and white drawing of a construction site
a group of men working on a construction project
a group of construction workers in a building