Steel Furnaces Don't Deserve the Hate (Blueprint in comments) : r/factorio
Advanced Smelting (8 Beacon) 45 / sec output - Factorio Blueprint book with all blueprints from Nilaus's Mas... - FactorioBin
Electric furnace - Factorio Wiki
Factorio veterans, whats the best way for iron smelting? Below is how i usually go about it (which do you think is better and what do you recommend to me) : r/factorio
Steel Furnace setup: 3-express belts of output - Factorio Forums