One man heard a “thud.” Another recalled yells echoing through the trees at the Atlanta Botanical Garden.

And just about anyone close to the construction of Canopy Walk at the garden Friday morning was left shaken by what happened: one dead and many more injured, some seriously.

Crews were pouring concrete for part of the elevated walkway when it collapsed shortly after 9 a.m., dropping workers as far as 40 feet to the ground. The botanical garden in Midtown, normally a place where moms bring their kids in minivans and SUVs, suddenly was clogged with ambulances.

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