§ Mr. Nealasked the Minister of Fuel and Power in how many mines Cardox is being used and what is its effect upon production and safety conditions.
§ Mr. GaitskellBlasting by means of Cardox Carbon Dioxide Cartridges is now practised at over seventy collieries. This method is inherently safer than the use of explosives, and particularly desirable where there is risk of firedamp explosions. It is, however, much less effective in the case of certain coals and also far more costly.