Due to being able to use Ore Dictionary machines (or just Jabba barrels) to convert dusts back to gravel ore blocks, then smash them back down to more ore dust blocks from normal Ex Nihilo (El Aquilo?) mechanics.For some reason, the high oven will process ore dust but NOT ore gravel and ore sand as of 3.1.1.
I only post that because I remember using ore gravel before.
Seems like a nice workaround would be to allow more block types to be smelted, not just to dictionary e.g: oreDustIron to oreIron. That complicates the steel works configuration though.