13' 0" Tunnelling Shield, Cutting Edge, Bulged Top Markham & Co. Ltd., Chesterfield
Blueprint, scale: 12", 3", 1 ½" and 1" – 1".
Details
- Extent:
-
1 Drawing
- Identifier:
- P&R/11/7
- Access:
- . All requests for access to this collection should referred to the NRM Archives Manager for approval