I was just at Steve Quale site which I do not visit to often but. I was just reading an article on future food supply and that jogged my memory on articles I was reading last night on farm dust rule. This may be implemented by the EPA. This rule will severely limit the work activities of agriculturalist to supply food for your table.
Dust has been around since the beginning of time so whats the deal. Where there is dirt there is dust.
Contact your elected representative and kick up a stink. This could possibly affect you just working a home garden. You out there with a roto tiller kicking up dust and some guy in a zoot suit is gonna get ya.
Be careful when you drive down those dirt roads. They are gonna get ya.