Where does this come from, and can I check it?

Workers dug the foundations inside pressurised caissons, and many were crippled by decompression sickness. The figure is taken from Britannica, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

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Yes. It sits on the Technology shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.

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The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.

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The Brooklyn Bridge was built on compressed air

Workers dug the foundations inside pressurised caissons, and many were crippled by decompression sickness The caissons were inverted boxes sunk to the riverbed and filled with compressed air so men could excavate without water flooding in. Washington Roebling, who took over from his father, was badly affected and directed the work from his home with a telescope. The condition, then called caisson disease, was caused by nitrogen bubbles forming too quickly on leaving the pressurised space. It sits in Mondo's technology collection, one of 200 facts that each trace back to the reference below.

Where this comes from

Britannica

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Tags: bridges, caissons, engineering

The Brooklyn Bridge was built on compressed air: the short answers

Where does this come from, and can I check it?: Workers dug the foundations inside pressurised caissons, and many were crippled by decompression sickness. The figure is taken from Britannica, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a technology fact?: Yes. It sits on the Technology shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.