The Bonne Terre mine in Missouri featured in this episode is part of the Southeast Missouri Lead District. This mining area covers about 4,000 square miles and seven counties southwest of Saint Louis, Missouri.
Vitaphone production reel #1361.
Robert L. Ripley states the Cape Romain lighthouse tower is "nearly 200 feet high". It actually is 150 feet high, which is "nearly 200 feet" only if one is rounding to the nearest hundred feet.