What is the proper way to dispose of old tubes?

Tvad: I attempted to dispose of them at two e-waste recycling events that were scheduled in my area over the weekend. I have perhaps 40 of them, so it was worth taking the time to dispose of them the right way.

Unfortunately, neither of these events seemed actually to have been held, as no recycling collection station was evident upon my arrival.

Instead, I will be sending them to Oregon for use by his friend in an artistic composition.

Trelja- I DO(and did) know the difference between silicone and silica, as(again) is obvious by the fact that I correctly used the term "silica" correctly twice elsewhere in my post(as the meanest of intellects would have noticed- No points for you there). Who ever mentioned "silicon" anywhere before you/now(another attempted spin)? TRY(though it's obviously impossible for you) to focus on the original issues. YOU made statements in your original post in regards to vacuum tube components that I challenged. Everything contained therein IS found in nature, and mostly elemental(gold, silver, copper, barium, nickel, zinc, carbon, chromium) none of which are "synthetics" by any stretch of the imagination(something you are blatantly long on)though they all do need some processing before use. Mica is also quite "natural", being taken from the ground and used almost as-is. Steel(as I mentioned in my first post and since you only see what you want to see: missed) is an alloy, BUT- that used in our tubes is a very simple mild steel that WOULD rust and eventually break down into it's original elemental components(return to nature). The glass you mentioned in your alarmist post is also simple glass(NOT some exotic blend or anything you've concocted) and(as mentioned in my post) of the same chemical composition as quartz and sand(YES Sparky- SILICA and oxygen) NOT a "synthetic". The point is: EVERYTHING in the average vacuum tube is quite harmless with regards to the ecology. YOU used the term, "bio-degradable"(which has NOTHING to do with "benign") in your first post. Only "organics" are "bio-degradable" by definition, so obviously: nothing in a vacuum tube COULD be! You've twice artfully danced around my challenge of your sulfuric-acid-not-being-found-in-nature(in any quantity) statement. No doubt the natural composition of the atmosphere of Venus(or acid rain) is too much truth for you to handle and respond to. Twist, spin and turn a bit more. It's mildly amusing!

Rodman99999, we're going to name your posts in this thread "dumb and dumber". Despite all of your thrashing, you still have almost ZERO idea what you're talking about. As I said, you've provided a perfect example of how having a little, and I do mean little, knowledge is dangerous.

Sand is not "silica" and oxygen. It's SILICA. Silicon dioxide - silicon AND oxygen. Simple, yes? Let's keep it that way - KISS - keep it simple, stupid. That should work out fine for you. Let's not even get into the term you threw out there, "synthetic" yet. That's in the intermediate class.

After we get these two, silicon and silica, down, maybe we'll tackle silicone if we're feeling ambitious and you've had a big enough breakfast.

Don't worry, at some point, with proper coaching and a bit more work on your part, you'll get it right...

Touche' Trelja- I stepped it in with the silica, silicon and silicone(sili of me). I suppose I've sniffed too many silca gel packs lately. I'll henceforth leave early morninig posting alone(and eat a "big enough breakfast" instead). Care to address any of the points that actually pertain to the thread, and whether the elements that vacuum tubes contain(and appear on the Periodic Table) are EVER considered "synthetics", or harmful to the environment? I'm still anxious to hear your reply to the question of sulfuric acid, in quantity, being found in nature as well.