Joseph Aspdin (1778-1855). Portland Cement, one of mankind's most important manufactured materials, was patented by Joseph Aspdin, a Leeds bricklayer, on 21 October 1824. Aspdin lived in this yard (then called Slip Inn Yard) and first sold his cement in Angel Inn Yard

Peter Hughes on Flickr
John on Flickr
Peter Hughes on Flickr

by Leeds Civic Trust

Colour: blue