As they begin the fall harvest, wary farmers are watching a federal debate over whether to clamp down on one of rural life's constant companions — the dust clouds that farm machinery kick up in fields and along unpaved roads.

Farming groups have urged the U.S. Environmental Protection Agency to retain its current standards for dust, soot and other microscopic particles, arguing that tighter restrictions would be unworkable and that dust isn't a real pollutant.

Grain farmer Charles Schmitt, who farms about 2,000 acres of corn and soybeans near the southwestern Indiana town of Haubstadt, called the possibility of tougher rules on dust "ridiculous."

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