They wrestled steel beams, hung off giant hooks and tossed red hot rivets – all while ‘strolling on the thin edge of nothingness’. Now the 3,000 unsung heroes who raised the famous skyscraper are finally being celebrated

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oised on a steel cable a quarter of a mile above Manhattan, a weather-beaten man in work dungarees reaches up to tighten a bolt. Below, though you hardly dare to look down, lies the Hudson River, the sprawling cityscape of New York and the US itself, rolling out on to the far horizon. If you fell from this rarefied spot, it would take about 11 seconds to hit the ground.

Captured by photographer Lewis Hine, The Sky Boy, as the image became known, encapsulated the daring and vigour of the men who built the Empire State Building, then the world’s tallest structure at 102 storeys and 1,250ft (381m) high. Like astronauts, they were going to places no man had gone before, testing the limits of human endurance, giving physical form to ideals of American puissance, “a land which reached for the sky with its feet on the ground”, according to John Jakob Raskob, then one of the country’s richest men, who helped bankroll the building.

Known for his empathic studies of workers, artisans and immigrants, Hine was hired to document the development of the Empire State Building during its breakneck 13-month construction period from 1930-31. Along with formal portraits of individual workers, he recorded men animatedly performing their jobs: drilling foundations, wrestling with pipes and cables, laying bricks and navigating precipitous steel beams as the colossal skyscraper took shape above Manhattan.