The Tennessee pot cave idea was stupid. They should have had a legitimate front for the power usage and immigrant workers (eg; small factory) on the property. Heavy machinery and welding equipment uses a shit load of power and would have been a good way to mask activity on the site. I've always liked the idea of going underground but when you are talking about those quantities you couldn't do it all yourself so you would have to involve other people. You can't trust people when it comes to drugs.