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Blasting caps come in a variety of forms.  Fuse caps are non-electric blasting caps that incorporate primary explosives such as mercury fulminate (very sensitive), lead azide (in copper shells, forms copper azide when exposed to moisture), and lead styphnate.  They are generally small metal tubes about 1/4" OD, x 1-2" long, closed on one end and open on the other, to accept the bitter end of a length of time (safety) fuse.  They can detonate when exposed to heat, shock or static electricity.  Old fuse caps that show signs of deterioration, such as crystallization, are extremely dangerous.  Call for assistance with disposal immediately.
Electric blasting caps are similar to fuse caps, but with two solid core insulated electric wires protruding from one end.  These caps contain an initiating charge and a base charge.  It is important to keep the leg wires shunted for safety.  They are sensitive to heat, shock, static electricity, radio frequency energy and electromagnetic radiation.
Non-El caps are relatively safer to handle than either fuse caps or electric caps.  They are crimped to flash tubing and incorporate an ignition charge and a main charge.  Please don´t use your teeth! (It´s been done - see picture).  These are not be be confused with the non-electric fuse caps.
It is illegal to have explosives in your possession without a permit to do so.  Contact the Oregon State Fire Marshal´s Office for information regarding receiving a Certificate of Possession and other safety requirements.
Blasting caps are dangerous,  PLEASE DO NOT HANDLE!
Electric Caps
Nonel Caps
Non-El Caps
 Nonel Caps
Non-El Caps
 Blasting Cap Tins
Blasting Cap Containers
 Nonel Caps & Tins                          
Examples of non-electric blasting cap
tins that we have recovered and disposed of.
The message (besides don´t touch) is to not open the tins; old blasting caps used lead azide as a primary charge and many used copper for the shells, in the presence of moisture, lead azide turns into extremely sensitive copper azide salts, which can detonate just due to the friction of opening the cap tin.
 Blasting Cap Damage
This photo shows what the damage
 fragments from a single blasting cap
can do to a coffee can
Don´t Do This
Example of the dumbest thing you could do. 
Please do not use your teeth
to crimp a non-el cap!