In this Jan. 29, 2015 photo, a sprayer soaks a field with liquefied manure and urine from a large-scale hog farm in Duplin County, N.C. A driving force behind some of these large-scale hog farms is Murphy-Brown LLC, which became part of the world’s largest pork producer when China-based WH Group bought corporate parent Smithfield Foods in 2013. WH Group aims to feed China’s appetite for meat with cheaper hogs from the United States according to lawsuits filed by more than 500 people across eastern North Carolina. (AP Photo/Emery Dalesio)

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