Firth's Patent Steel Prop
Firth's patent steel prop, made from rolled steel joist, with 5 centimetres of web cut-away from both ends and the flange ends turned over
Details
- Category:
- Mining & Ore Dressing
- Object Number:
- 1933-382 Pt1
- Materials:
- steel
- type:
- prop
- credit:
- City & Guilds Engineering College
