Structural steel, 1971; a worker sitting on the top beam of a structure tightening bolts on a beam
Structural steel, 1971; man walking along a beam at the top of a steel structure
![Structural steel, 1971; men working on a steel structure [2 of 3]](/uploads/r/null/c/3/e/c3e21d00fdd3287467f09697c36f3ac1831a384f1380ccdcc2bd9b8e08bb7067/a004872_142.jpg)
Structural steel, 1971; men working on a steel structure [2 of 3]
![Structural steel, 1971; men working on a steel structure [3 of 3]](/uploads/r/null/4/7/8/478f0f7fba96fae17c002b3506b27b1e18fb22867b5f9bcc4687fb9196bea63a/a004873_142.jpg)
Structural steel, 1971; men working on a steel structure [3 of 3]
Structural steel; workers assembling a steel structure
Structural steel; pieces of steel cabling for A. Murray Mackay bridge connecting Halifax and Dartmouth
Structural steel; A. Murray Mackay bridge connecting Halifax and Dartmouth under construction (view from deck of the bridge) [2 of 2]
Structural steel; two men working a steel suspension cable for A. Murray Mackay bridge connecting Halifax and Dartmouth
Structural steel; men working on A. Murray Mackay bridge connecting Halifax and Dartmouth
Structural steel; A. Murray Mackay bridge connecting Halifax and Dartmouth under construction (view from top of a tower) [2 of 2]
Structural steel; three men working on structural beams under A. Murray Mackay bridge connecting Halifax and Dartmouth
Survey, 1971; man with an umbrella standing next to surveying equipment
