Could You Be The Next Banana King? http://cbpowerandindustrial.wordpress.com/2013/04/10/you-could-be-the-next-banana-king/ is based on the real-life story of Samuel Zemurray, who started out penniless but built an empire on discarded bananas.
It's given me the idea to look for money where other people see only waste.
My question is twofold: is there anyone on HN making money from refuse or have any ideas / know of any stories of people who are?