§ 47. Sir E. Bullus
asked the Minister of Power how many pit ponies are at present used in coal mines; what is the average length of stay underground; and at what rate is the phase-out of these animals proceeding.
§ Mr. Freeson
The National Coal Board at present uses about 2,500. Their average working life is from ten to fifteen years. I am informed by the Board that their use underground will have virtually ceased by 1970.