USE OF EXPLOSIVES ON THE FAEM 451 



slowly and delaying the shot. It is better to wait until the next 

 day, if possible. 



When using electric blasting caps, there is no danger of de- 

 layed shots and less likelihood of misfires. When one does occur, 

 disconnect the wires from the blasting machine, and it will be 

 safe to return immediately to the blast for investigation. Never 

 connect the -wares to the blasting machine until it is time to fire, 

 and guard against a careless person tampering with the machine 

 and leading wire Avhile loading shots. 



In selecting a safe place to watch a blast, do not get behind a 

 tree or building, but stand in the open at a safe distance from 

 the blast, so that you can see the flying fragments and dodge 

 any that may come beyond reasonable bounds. Do not have the 

 sun in your eyes, as it may obscure flying missiles. 



Ohtaining practical instructions before hlasting. — To do blast- 

 ing work successfully, economically and safely, it is very desir- 

 able that the blaster should first familiarize himself A\itli 

 approved methods. Sufficient space cannot be spared here for a 

 detailed description of best blasting practice and precautions 

 necessary to be observed in handling dynamite. Our advice, 

 therefore, is to write to a manufacturer of explosives for an 

 instruction booldet before attempting any blasting operation. 



