Chilean hog producer Agricola Super has gone big with its manure management program, installing eight digesters, and it has reaped the benefits in reduced odor complaints and marketable greenhouse gas-reduction credits. The credits can be sold to other greenhouse gas producing industries as a way to mitigate their emissions and meet goals set by the Kyoto Protocol. In a 2004 deal, Agricola Super sold credits worth 1.75 million metric tons of greenhouse gas emissions to Calgary, Canada-based power producer TransAlta Corp for $9 million. In addition, Tokyo Electric Power Co will purchase credits from Agricola worth two million metric tons of greenhouse gas over a nine-year period from 2004 to 2012. The price was not disclosed.