© 1952 by Institute of Chartered Foresters
THE USE OF TIMBER IN MINING1
National Coal Board, Scottish Division, Production Department
The paper considers briefly the history of the use of timber underground and the general problem of support and goes on to discuss the two main uses for timber in mining, i.e. on roadways and at the coal face, where the two principal methods of working are pillar and stall working and longwall working. Species whose timber is useful for supports are listed and the various kinds of supports given together with the chief factors affecting their behaviour. Replacement of timber by steel is discussed, and in considering the outlook for home-grown timber props emphasis is laid on the need to supply only the best types properly prepared and seasoned.