Remove the valve, fill with water and drill a hole below the water line and take to a scrap metal yard and they should take them as normal scrap metal.
That is what our local yard tells their customers to do. With two holes for air circulation there is no chance of retained gas to explode if compressed or exposed to pressure.
2Dragons wrote:
I have a small Webber cooker that uses the small propane tanks. My problem is, where do you dispose of them? The local landfill wants $5 apiece to take them. I don't think I even paid $5 each for them! I use the small ones because I can't lift the 20lb tanks anymore (4 back surgeries). Would love some ideas as to what folks who use these tanks for welding do with them after they are empty. Thanks ;-)