by the air compressor, an air receiver is fitted for directing the air down the hollow pipes, and a disposal system is added to ... Sometimes a small amount of water is injected into the air stream. ... in their Drillers Training and Reference Manual for producing a stiff foam consists of a#39;12 lb bentonite, Y* lb soda ash, a#39;/; gallon ofanbsp;...
|Title||:||Handbook of mining and tunnelling machinery|
|Publisher||:||John Wiley & Sons - 1982|