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- A - Pre-Vesting Colliery Companies superseded by the National Coal Board - [1672]-1972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
      - 9 - Butterley Company Colliery Offices correspondence files on coal mining research - 1917-1945

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Archive Reference / Library Class No.	NCB/A/BUT/13/9/5
Former Reference	N5/230
Title	Butterley Company correspondence file on mining research
Date	Dec 1930-Jan 1945
Description	Including on process of carbonisation and reduction of coal dust in mines, with copies of questionnaires for the company's collieries, Sep 1938. Also including photograph of newe factory at Boughton belonging to the company, 3 Jun 1937, and copy of paper for the Institute of Fuel entitled "The Rational Preparation of Coal" by R. Lessing, Sep 143
Extent	1 file
Level	File
Repository	Derbyshire Record Office
Archive Creator	Butterley Company
Archive Creator	National Coal Board

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