Doesn't matter how much money you throw at this wild goose chase at the end of the day, someone, or many someones, would have to manually sift through every square inch of the garbage in that zone. Who is going to do it? Even if they somehow narrowed it down to one zone of the landfill you're still talking about hundreds if not thousands of tons and years of accumulated garbage. No one in their right mind will want to perform such a ridiculous task. You would be exposing human beings to an extreme toxic environment. To call it inhumane would be an understatement as well as violating all kinds of labor laws and human rights violations.