Another terrific train photo, Harbie! I checked online for fluorosilicic acid because I didn't know what it was ... it is one of the fluoride chemicals used to fluoridate drinking water. There were several articles about fluorosilicic acid being a waste product and we should not be drinking it. I didn't have the time to continue reading the multitude of articles or watch the videos on this topic but it's definitely something to think about for further research.
@gaylewood Thanks so much ,Gayle. I was planning to look it up but didn't get the chance yet. Very interesting. I know our water has fluoride in it. Definitely something to learn more about.