I'm building a model of the former DM&E yard in Waseca, MN and there's a detail on the diesel fueling platform that's proving elusive as far as identifying just what the heck it is. I have a whole bunch of pictures of it, but none of them are particularly good. To wit, the rack of "something" next to the "MARKERS" box -




Can anyone tell me what those "somethings" might be?
Thanks!
-Mark