THC 2003.902.235 Tapping Slag from Experimental Blast Furnace photo about 2 years 0 THC 2003.902.232 Tapping Slag from Experimental Blast Furnace photo about 2 years 0 THC 2003.902.107 Tapping Slag from Experimental Blast Furnace photo about 2 years 0 Spännarhyttan masugnarna photo over 2 years 0 Haut fourneau de Cons la Grandville pic-003 photo over 2 years 0