I have a food grade, heavy Gage metal, stainless 55 gallon drum. The drum was made in the late 1950's in a lot of 100 at the cost of $200 each. I have one made into a wood burner for my pole barn I have used it for over 25 years with no apparent wear or damage. The drums are heavy wall and closed end, with heavy steel bands protecting the welded seam ends and two circular "I" steel rings a third of the way down from each end for rolling the drum into ship holds. I only have one chance to build this UDS looking for good suggestions and hints. The picture has a lot of stuff in the way, not the case now. It is the only picture I have of the drum at present. Thanks much ahead of time.