Guys----you are looking for small objects---can you please find something LARGER??? I dont think that you can justify another expedition because of a coke bottle, or what you think are radio tubes. You cant positively tie those pieces to NR16020, which, IHMO, is what you should be looking for. But also IMHO, you wont find that evidence at the 800 foot level. 3000+ maybe (probably). But Tighar didnt have the assets to go that deep, and respectfully, I question that. WE talked about that possibility in DC. I'll go back and research the expedition assets again. I must have missed something.