Iron crucible smelting requires coke which has had its burn temp adjusted to 1500(Original mod set it to 1900 and also set iron smelt temp to 1200 or less).
Mining bag set back to vanilla size among other things.
I forget exactly what I reverted but there were some patches I didn't like from the original:
I like a lot of things this mod does but wanted to tweak some stuff and I'm too lazy to write patches so just edit and reupload.
All credit goes to the original author of Ores-A-Plenty