I bought two packages of these dragline buckets from Gilbert Lacroix, owner of GLX Scale Models, Inc. After reviewing the sizes he makes available (there three of them), I opted for the "medium" size, which he flags for O-scale. Dragline buckets are kind of like trees; any size will do, because in the real world, all sorts of sizes are used. Mine are intended as a flat car load. Of the medium sized ones, there are two in a box. The packaging is really very nice. I'm actually hanging on to the box, for other uses in the hobby room.
Gilbert warned that there is some flash to be removed from the parts. This is not a great photo, but removing the flash does take a bit of time, especially since you have to get close to the claws/teeth of the bucket. The interior of the bucket has molded into it chains and other debris from the last job where these were used. That area also has some flash in it, which can be challenging to remove.
Here's one that's all cleaned up.
After doing them all, I sprayed them with Krylon Primer gray.
This is them after a first pass with two paint colors. The exterior is supposed to look like weathered yellow, and the interior is to appear rusted. I will do some more painting and weathering later on. However, at least now I have a reasonable-looking load. They are on a PRR FM 40-foot flat car. As you can see, plenty of space. When they are all done, I will add the rigging to secure the load.