For part of the 20th Century, Ford Motor Company relied heavily on sand beneath its plant in St. Paul to make windows for its cars. Host Eric Roper discusses that operation with reporter John Reinan.LINKS:<a href="https://www.startribune.com/did-ford-motor-co-make-millions-of-windows-from-sand-mined-from-beneath-st-paul-plant/600006618/?refresh=true">John's Curious Minnesota story about the Ford Plant sand mining</a><a href="https://www.startribune.com/a-history-of-the-st-paul-ford-plant/125652448/">A timeline of St. Paul's Ford Plant operations</a><a href="https://www.tptoriginals.org/made-in-st-paul-stories-from-the-ford-plant-full-episode/">Made in St. Paul: Stories from the Ford Plant</a> (Twin Cities PBS / Producer: Peter Myers)

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