Industry & Technology -line art (cc4) Iron and steel making An early 19th century blast furnace (c. 831) - a furnace used to smelt iron ore in very high temperatures by using very hot compressed air.

Industry & Technology -line art Iron and steel making A 19th century foundry - iron casting Illustration

Industry & Technology -line art (w4) Iron and steel making A late 18th century foundry Illustration

Industry & Technology -line art (w4) Iron and steel making An early 19th century blast furnace - a furnace used to smelt iron ore in very high temperatures by using very hot compressed air.

Industry & Technology -line art Iron and steel making Apparatus for collecting waste gases from blast furnace., forge, hot, heat, melt, metal, ore

Industry & Technology -line art (w4) Iron and steel making A casting mold An early 19th century iron mold for casting ingots of iron in a foundry.

Industry & Technology -line art (w4) Iron and steel making Illustration An early 19th century blast furnace - a furnace used to smelt iron ore in very high temperatures by using very hot compressed air.

Industry & Technology -line art (w4) Iron and steel making A section of a furnace for smelting iron ore., forge, hot, heat, melt, metal, ore

Industry & Technology -line art (w4) Iron and steel making An early 19th century blast furnace - a furnace used to smelt iron ore in very high temperatures by using very hot compressed air.

Industry & Technology -line art Iron and steel making Apparatus for collecting waste gases from blast furnace that are then recycled to heat the air fed back into the furnace.

Industry & Technology -line art (cc4) Iron and steel making Illustration An early foundry or forge.