Geno;
I just thought it sounded like something you would have come up with, so assumed it was your own "Invention".
Incidently not far from where I live is an area which years ago was used as a "Health Resort". Is in the area known as the "Highland Rim Plateau" of the Cumberland Mountains here in Middle TN. This resort was named Cumberland Springs. In a very small area were 7 springs & from each came a different type of water. When my family first moved here in the late '40s we went by & saw them all. Can't remember the water types for all of them now, but do recall one of them was a sulpher spring.
While many springs do produce water quite suitable for bluing, some few others don't.
