Thermal Foundation Niter is equivalent to Railcraft Saltpeter, and is created by putting Nether Saltpeter in a grindstone, along with a couple other methods. TF's Niter should be used to create things like Cryotheum from the same mod.
It could be added to oreDict dustSaltpeter to give it some uses, though I'm not sure all of the saltpeter recipes use oreDict or directly calling the railcraft saltpeter item.
Thermal Foundation Niter is equivalent to Railcraft Saltpeter, and is created by putting Nether Saltpeter in a grindstone, along with a couple other methods. TF's Niter should be used to create things like Cryotheum from the same mod.
It could be added to oreDict dustSaltpeter to give it some uses, though I'm not sure all of the saltpeter recipes use oreDict or directly calling the railcraft saltpeter item.