Record

NCB - National Coal Board, later British Coal Corporation - 1574-1994
- A - Pre-Vesting Colliery Companies superseded by the National Coal Board - [1672]-1972
  - BUT - Butterley Company Colliery Offices - 1857-1960
    - 13 - Butterley Company Colliery Offices records on the development of collieries - 1895-1947
      - 10 - Butterley Company Colliery Offices correspondence files on analysis of the quality of coal - 1910-1945

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Archive Reference / Library Class No.	NCB/A/BUT/13/10/13
Former Reference	N5/199/5
Title	Butterley Company correspondence file on analysis of coal by H.L. Pirie of the Coal Utilisation Council relating to investigations into comparisions of domestic fuel types
Date	Apr 1934-Jun 1934
Description	Involving analyses of coals from Swanwick Old Pit and Hartshay Mickley Seam
Extent	1 file
Level	File
Repository	Derbyshire Record Office
Archive Creator	Butterley Company
Archive Creator	National Coal Board

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