CIRCA 1940s - era film showing the first assembly line plants in America dedicated to making tanks for WWII.?

Name: Circa 1940s Era Film Showing First
Uploaded: 2018-12-19T00:00:00.000Z
Duration: 1 min 1 s
Channel: Rick Ray
Description: CIRCA 1940s - era film showing the first assembly line plants in America dedicated to making tanks for WWII.? Stock Footage Video (100% Royalty-free) 1021214998 | Shutterstock