92 COALFIELDS AND COLLIERIES OF AUSTRALIA. 



CHAPTER XII. 



EXPLOSIVES. 



In New South Wales the permitted explosives are the 

 same as those allowed in Great Britain. There are about sixty 

 of them, but only some seven are on the local market, and 

 most of them find little or no use. 



The composition of those permitted explosives which are 

 pushed out here, as given in "Statutory Rules and Orders," 

 issued by the Home Office, London, is as follows : 



Monobel. 



Parts by weight, 

 not more than not less than 



Nitrate of ammonium 82 . . . . 78 



Nitro-glvcerine 11 .. .. 9 



Wood meal (dried at lOOdeg. C.) 10 .... 8 



Moisture 2.5 .. . . 0.5 



Saxonite. 



Parts by weight. 



not more not less not more not less 



than. than. than. than. 



Nitro-glycerine. . .. 68 .. 58 



Nitro-cottoii 5J .. 34 



Nitrate of potassium 304 . . 274 . . 91 . . 73 



Wood meal 84 .. 5 



Chalk I . . 



Oxalato ol ammonium .. .. 27 9 



The wood meal to contain not more than 15 per cent., and 

 not less than 5 per cent, by weight of moisture. 



