Cleveland Bridge - Images of Cowans Sheldon cranes

Black and white photographs of Cowans Sheldon cranes under construction at Cleveland Bridge, Darlington. They include:
2 small copies of a cranes framework
2 small images of an access hatch, dated 10-5-10, numbers 100 and 101
2 large images of a metal cabin with workers standing next to it
2 large images of an unknown crane's framework
An image of a section of a crane with a board reading "Bridge Portion of Transporter for Oran , for Messers Cowans Sheldon & Co Ltd, Carlisle, Oct 1929."
An image of a section of a floating crane, with a board reading "150 Ton Floating Crane Built for Cowans Sheldon & Co Ltd, Carlisle, Feb 27 1917
An image of a section of Landslide Tower for Oran Transporter
An image of Waterside Tower for Oran Transporter