Iron and steel works near Barrow-in-Furnes, 1867.

"Compass, probably Flemish, 18th century."

'The Cast Iron Bridge over the River Severn near Coalbrookdale', 1823.

'The Cast Iron Bridge over the River Severn near Coalbrookdale', 1823.

Five Roman iron nails, late 1st century AD.

Five Roman iron nails, late 1st century AD.

Five Roman iron nails, late 1st century AD.

Roman iron nail, late 1st century AD.

Factories and collieries of Grand-Hornu, Belgium, 1830-1860.

Barmouth Bridge, c 1890.

Anvil and hammer, c 1890.

Anvil, c 1890.