Hog farm's biofuel plant will create fuel additive from manure UTAH - A business created by Circle Four Farms is ready to turn manure from millions of pigs into a clean-burning, renewable and moneymaking additive to diesel fuel. 17 May 2003 2 minute read Our Partners Lallemand Lanxess Hamlet Protein More News View all South Korea eyes trade deal with US by August 1 Markets Trade 14 July 2025 3 minute read China’s June soybean imports hit monthly record Market Trends Feed markets 14 July 2025 2 minute read Brazil dominates supply amid trade tensions with US Hog prices dip as pork markets lose upward momentum - CME Market Trends Markets and economics 14 July 2025 2 minute read Cattle futures hit highs on tight supply, strong demand Our Partners Lallemand Lanxess Hamlet Protein