[jeremygaither]

There is probably a lot of leftover rock from extracting everyday things like aluminum, as well as rare earth elements, which electronics manufacturing needs for many components. If the generation of the stones that get crushed and used for dusting is an output of other essential mining projects, that could further offset the costs associated with generating rock dust. It could also potentially reduce the shortage of these rare earth minerals, and associated electronic components, by attracting more mining operations to operate in additional countries.