Original envelope annotated 'Mr W Lewis, 5 Area Scientific, Pressure Measurement, 30/9/66'.
Pressure Measurement Apparatus
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- ReferenceGB 214 DNCB/14/4/157/53
- Dates of Creation30 Sep 1966
- Physical Description1 Glass Plate Negative
Scope and Content
Original National Coal Board negative number: A20/337. Original Glamorgan Archives Box number: DNCB/48/12.