I saw this on YouTube – https://www.youtube.com/watch?v=IveMcW7Yw9w
Direct link: Strataca – Kansas Underground Salt Museum – Welcome Video: https://www.youtube.com/watch?v=IveMcW7Yw9w (about 1:35 minutes long)
I previously posted about Strataca here: Strataca, The Kansas Underground Salt Museum – Kansas Tuesdays April 2, 2019.
I still have a small bag of rock salt that I collected when I visited the salt mine.