the.com/caisson
A watertight box that lets humans build foundations where they have no business breathing.
sunk underwaterSealed chambers pumped full of air for digging riverbeds
the bendsPressurized workers got crippled surfacing too fast
brooklyn bridgeIts caissons cost workers paralysis and lives
military meaningAlso a wheeled chest for hauling ammunition
pressure deepWorkers labored under several atmospheres of compressed air