Slag (Thermal Expansion 3)

Slag is a byproduct of smelting ore dust with sand in an Induction Smelter. Smelting ore blocks with sand yields a chance to drop Rich Slag. Rich Slag can be combined with ore blocks to triple the ore output and to create a secondary byproduct of regular slag. Slag can be smelted in a furnace to create rockwool. Rockwool can be dyed like regular wool but will not burn.