Hogs outnumber residents by about 7 to 1 in Iowa, the top pork producer in the nation.
Hog farms and pork processors directly employed 36,070 workers here in 2021, according to the National Pork Producers Council.
A typical hog farm in southeast Iowa is capable of producing enough feces and urine to fill one-and-a-half Olympic-size swimming pools a year.
The manure breaks down in pits, emitting ammonia, methane and other noxious gases before it's used as fertilizer.
Pig carcasses are composted in sawdust at Valley View Swine.
Organizations:
National Pork Producers Council
Locations:
Iowa