Industry & Technology -line art (cc4) 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 (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 (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 (w4) Iron and steel making Early 19th century mold for casting ingots of iron in a foundry.

Industry & Technology -line art (cc4) 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 A 19th century foundry - iron casting Illustration

Industry & Technology -line art Iron and steel making Cupola furnaces for melting cast-iron., forge, hot, heat, melt, metal, ore

Industry & Technology - line art Iron and steel making Machines for blowing air into furnaces

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

Industry & Technology -line art (cc4) Iron and steel making An early 19th century blast furnace (c. 1831) - a furnace used to smelt iron ore in very high temperatures by using very hot compressed air.

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 (w4) Iron and steel making Early 19th century tools for casting ingots of iron in a foundry. industrial process, forge

Industry & Technology -line art Iron and steel making Ventilators in a blast furnace