Yesterday I got a call from one of my friend, he wanted me to pick up a oxygen cincentrator that he was using for parts and four oxygen bottles, plus an old dryer, well the concentrator yielded some stainless steel and aluminum and the oxygen bottles, which they were all empty and the regulators taken off of them, made $ 18.00 off of the concentrator parts and the dryer, Monday I will call to see if they will accept the bottles, I hope they do.