Westech via Casper Star-Tribune

A truck with Westech's Flow Control Body holds 447 tons of coal at Peabody Energy's North Antelope Rochelle coal mine, north of Douglas, Wyo. Guinness World Records recently awarded the body's manufacturer, Mills-based Westech, a certificate for its custom-built unit designed for a Wyoming mine.

Westech truck hauls 447 tons of coal, sets Guinness World Record

It seems it's quintessentially American to build the biggest things, particularly when it come to motor vehicles.

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