I am always surprised at how many people don't realize that there used to be 31 gallon kegs, while the 15.5 is frequently referred to as a half. I know that it has been almost 30 years since they have been used in the US, but what I was wondering is if anybody has any idea what happened to these kegs as they were phased out in the 70's and 80'?. I can remember as a kid, that there was one family who used to have house parties with these full kegs because the father owned a bar and I believe that it was only bars that could buy full kegs (at least in CT). I never lifted one, but I remember watching at one of those parties where it took two football player guys to get it into a giant ice bucket. I even tried google images thinking that somebody would have photos or on eBay thats somebody would have some to sell, but I can only find one guy who has one from 1955. Even if their was an organized effort to recycle these at the time, I am still surprised that there aren't more floating around and that nobody except this one guy seems to have ever uploaded a photo of one to the internet.