http://news.nationalgeographic.com/news/2004/07/0701_040702_pigoil.html
here is the address to an article in national geographic that tells of the U of I turning hog manure into crude oil. Dr. Zahng states that at this point they are only recieving 9 oz of oil from each 1/2 gallon of crap.but if 50% of america's swine farms adapted this procedure we could cut back on importing oil by up to 1 1/2 billion dollars yearly. hog farmers would also make a considerable amount more per hog( 10-15$) this is quite a bit since only a few years ago the price of a market hog dropped to under $30.
