I've got to do some reading on it. I guess the reason I'm like Karen, skeptical, is that the term rock dust just covers too much territory. Your rock dust is Oregon basalt, my rock dust most likely would be limestone, otherwise known as ag lime.
On the other hand I know the soil around a volcano grows grew stuff so I'm trying to wrap my head around the ideal. If I still had access to a dump truck I'd go get some and try it.
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