I was thinking about a "convenient" storage method for my coal ash, so I didn't have to trudge thorough the snow, to dump my ash pan in the field. Also, something, which I could pick up with the forks on my tractor. I was thinking about a modified 275 gallon oil tank. Then was reminded of the ash effect on metals, so started looking for plastic. Then, I became aware of IBCs (Intermediate Bulk Containers), which can be had, used, for $100.00 or less. While I haven't been up close and personal with these, they look like they might work for ashes, ... with a little modification to dump the ash out the bottom. ?? Then, I thought, they should/could make good hoppers for stokers. ?? They are a plastic 275 - 330 gallon container with a metal framework surround and are palletized.
I've got pictures, but "I" didn't take them, so Richard doesn't want them up-loaded. You can Google "IBC totes" or find them on eBay. Some are food grade, others aren't. If and when I get one, I'll post pictures.
Edit: I see, there is another thread referencing these.