A review of controlled recirculation ventilation systems in U.K. collieries

CIM Bulletin, Vol. 76, No. 849, 1983

J.A. ALLAN, H.Q. Ventilation Engineer National Coal Board, U.K.

The history of the development and application of controlled recirculation systems in U.K. collieries is traced and the theory ' behind such systems briefly examined. Specific applications for dealing with dust and dust/heat problems in headings, for which practical experience is currently available, are described. Consideration is given to the special features which these systems introduce in the underground situation and to the essential safeguards which are required for their safe use.
Keywords: Underground mining, Coal mining, Ventilation systems, Controlled recirculation, Collieries, Dust control, Air conditioning, Mine safety.