Slaty band ironstone, one of a collection of specimens illustrating the cast and malleable iron manufacture of Monkland district, Airdrie

Ironstones, one of a collection of specimens illustrating the cast and malleable iron manufacture of Monkland district, Airdrie

One of a group of specimens illustrating iron ores and the smelting of pig-iron - a sample of junction of parrot coal and lower band ironstone, in three pieces

A sample of black ironstone, containing about 28% metal, one of twenty specimens illustrating the manufacture of malleable iron from the Farnley Iron Works, Leeds, mid 19th century

A sample of calcined ironstone, in multiple pieces, one of twenty specimens illustrating the manufacture of malleable iron from the Farnley Iron Works, Leeds, mid 19th century

One of a series of specimens illustrating the manufacture of iron - a sample of blackstone, an ironstone

One of a series of specimens illustrating the manufacture of iron - a sample of calcined ironstone