AGRICULTURE: Corn could one day be harvested from former mines Amanda Peterka, E&E reporter Published: Tuesday, May 13, 2014 Genetically modified corn could one day be harvested from the most unlikely of places: former mines and caves. Please subscribe to Greenwire to read the full story. Username: Password: Forgot your access codes? Recover them. Not a subscriber? Sign up for a trial. Ready to subscribe? Click here.