Ref NoLDC/TD/1/30
TitleEngineering and Technical Microfilmed files
Date1960s-1980s
TermMicrofilms
AdminHistoryAs part of the registry system, each new file in a series was given a number, which depended on its classificaton. Once a file was full, a new file was started and labelled "part 2" etc. Old files were reviewed regularly. Depending on use, old files were either destroyed, microfilmed or retained. This series comprises those registry files that were microfilmed.
AccessStatusOpen
Extent102 microfilm cartridges and 3 indexes
ScopeandContent105 items comprising:

1-39. Catridges of microfilmed engineering files.
40-102. Cartridges of microfilmed technical registry files.
103. Technical microfilm register/index.
104. Engineers microfilm index.
105. Card index, Chief engineer microfilmed files.
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