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| Archive Reference / Library Class No. | D982/4/2/6 |
| Former Reference | D982/5/35 |
| Title | Blueprint of a 5 cwt, motor-driven pneumatic hammer |
| Date | 30th May 1925 |
| Description | Scale 1.5 inches = 1 foot |
| Level | Item |
| Repository | Derbyshire Record Office |
| Archive Creator | Eagle Star Foundry, Belper (Smedley Bros) |