Construction of the Rotherhithe Tunnel, London, 1907.

Iron ore pellet. Light micrograph in darkgr

Iron Slag. Light micrograph in darkground l

'How to build a two valve set', No 3, Godfrey Philips cigarette card, 1925.

White cast iron, light micrograph, 1990s.

Iron Forge at Rouillon, Belgium, c 18th century.

'Prilect' electric travelling iron, 1948-1960.

Balling irons, 19th century.

Iron smelting in a blast furnace, Japan, 1754.

Flintmill, 18th century.

Sudanese iron spear, 1930s.

Sections of tramway, 1815.