From the San Francisco Chronicle:

Agriculture Secretary Tom Vilsack said Monday that farmers shouldn't be overly concerned that new federal air regulations will hurt their livelihoods.

Farms frequently produce dust clouds during harvests, and farmers are waiting nervously to hear whether the U.S. Environmental Protection Agency plans to clamp down on dust and dirt.

The American Lung Association and others have called for tougher dust controls when the EPA revises air pollution standards.

But members of Congress from rural areas have asked the EPA not to tighten rural limits on the so-called coarse particulate matter. Tighter controls could require farmers to pave more gravel roads or use costlier no-till farming practices.

Vilsack tried to ease the worries of farmers.

For more, see: Agriculture chief aims to ease fear on dust rules