LEWISTON, Minn. – The corn wasn't flowing out of the grain bin any longer, so farmer John Daley stepped inside to look more closely.
The corn clumped together and rose higher at the sides, and as Daley stepped onto an outer patch of grain, normally packed enough to be sturdy, his feet crashed through and he tumbled toward the center. Corn raced up like a rockslide to his chest and into his mouth and nose — dusty and dry, the stuff they feed hogs.
It took Winona County firefighters who had been freshly trained in a grain bin rescue course nearly three hours to pull out the 80-year-old Daley. He would have suffocated if he had shared the fate of most farmers engulfed by grain.
Despite widespread technological advances on farms, dozens of people each year become trapped in grain bins — leading to many deaths that experts say are usually preventable.
With harvest season set to begin, some in the agricultural industry worry that farmers are particularly vulnerable as a likely record corn crop of 14 billion bushels pushes vast amounts of grain into storage.
While U.S. grain bin accidents have fallen from a peak of 59 in 2010, they have crept up again in recent years.
In June, the number of people entrapped in grain bins nationwide already had surpassed last year's total of 33, said Bill Field, a Purdue University researcher who tracks such incidents.
"Nationwide, this trend … should be on the decline, but it's not," he said.