Steverman

Iron Furnace is missing as he mentioned in his Steam mod comments. It can be fixed by adding it to any book in Books.txt under "Steam\steamapps\workshop\content\108600\498441420\mods\Hydrocraft\media\scripts" . I added it to HCBookindustrial book: line 1147, which is the Industrial Mechanics Textbook: TeachedRecipes = Build Iron Furnace;Build Trip Hammer;Build Steam Boiler;Build Steam Machine;Upgrade to Steam Hammer;Make Gears;Make Small Sheet Of Metal;Make Sheet Of Metal;Make Crank;Make Lever;Make Small Rolling Mill;Make Conveyor Belt;Make Electric Piston;Make Macerator;Make Fan Blade;Make Duct Fan;Make Metal Duct,

That's an issue with the latest stable build: 37.14