freetown fred wrote:I see the gloom & doomers are at it again
So are the "I know the answer, no need to think" folks.
The original post mentioned using it as one would use lime. If one needs lime, they just will need to buy even more to counteract the acidity of coal ash.
I use rice coal clunkers instead of sand on my driveways. But fly ash does irritate MY lungs, so I use a dust mask with the normal curly breezes here. That by no way means it does the same to everybody.
As far as minerals, coal ash generally DOES help plants grow, but only if it doesn't make the the soil more acid than the plants like. Higher yield is unrelated to higher quality or possible contaminants.
Regarding heavy metals, which coal from which mine, how much is used? Anecdotes such as "my family lived a long time" mean nothing. It probably was genetic with the help of a couple drinks a day. Maybe local produce rather than imports with who know what chemicals used growing them.
Generalizing coal ash as good or bad in a garden just doesn't work.