posted December 08, 1999 08:34 PM
Zineb is (from memory)
Zinc Ethylene Bis di thio carbamate
Most potent of the family
mildly irritating dustManeb is the same with manganese as the metal
it makes poor expl and is highly irritating to skin lungs & eyes.
Firban is the same with iron as the metal
poor expl more irritating than maneb.
When zineb is mixed with chlorate it goes by the name zinex to those who use it.
Zinex can set off dynamite. It takes more than other primary explosives, but it will do it. 60% dynamite can be set off with a 30:06 hull filled with zinex. Use a broken christmas tree low voltage bulb (100 string runs about $3) with the filament in the stuff and sealed wires to make an electric cap.
The optimum compression is to compress it to 2/3 of the volume it has after the ground fine components are mixed well. Zineb has a fluffing agent in it to make it pour well. That's why its only 75% strength.
Have not tried zineb as a sensitizer for FGAN
(note ANFO refers to ammon nitrate plus fuel oil) FGAN refers to fertilizer grade prilled ammon nitrate.
Max sensitivity prilled mixes use only 1% fuel like wax (parafin) or moth balls (napthalene) to coat the surface to get a very fast initial burn that takes the rest with it if it has some confinement or without confinement is large quantity is present.
Incidentally napthalene and para di chloro benzene (the other kind of moth balls) both make pretty brisant expl with chlorates, and are not overly sensitive to friction, and appear stable in storage. They do not reach Zineb brisance though.
To get the ratios to mix, look up their formula in a chem book, and balance the equation to burn all carbon to CO2, all hydrogen to H2O and any chlorine to chloride of some metal that is carrying the oxygen, or let it go as Cl element. Then adjust, testing for ability to shatter a 22 hull full of it
in a can of sand. When you get to 15 pcs of hull you are at Mercury fulminate brisance.
to fire 22 hulls in the sand (or elsewhere) cut a pc of RG58 radio coax cable with dikes to a square end. At other end seperate the shield and center insulated conductor for about 4 inches. Connect them to a stun gun and it will spark over the other end and ignite whatever is in the 22 hull. A good test is a drop of Nitroglycerine on cotton in a 22 hull. This makes a cap that will set off dynamite. Instead of the stun gun you can use most any neon or oil furnace ignition transformer on the cable to fire it.
Rg58 fits 22 hulls exactly, and a simple crimp with diagonals, or a crimping tool holds it there very well. Using a wire stripping tool for large (#8 or # 10 wire) will crimp it without damaging the hull.
This ignition method is good for it takes about 6 KV minimum to flash over the square cut end from center to edge shield.
The 22 hulls are available in quantity at any shooting range, laying all over the ground.
The 22 magnum hulls make a much larger cap.
However zinex does not equal AP or other commercial cap materials, but in a pinch it can be made to work when nothing else is available.
Easiest way to set off ANFO is to put it in a
old propane cylinder of the 14 oz size, (takes some modification of the tank and is a lot of work) and install a model airplane glow plug (soldered in, NO leaks) and pump it up to 100 psi with propane, then add O2 till the gage reads 300 psi,
One such container, burried 5 ft deep, can loosen the earth from its spot to surface, and stir up the surface about a foot to make easy digging. Such a container would set off larger quantities of ANFO, in sacks, for digging a pond for example.
When gas is introduced into the 14 oz cylinder it does not mix but layers when added. You have to let it stand about an hour so thermal agitation will mix the two , and then it will go. If you use a glow plug and don't overdo the voltage on it and it won't go because you didn't wait long enough you can try try again. Best to let it stand long enough though. This is only an expedient used to dig water ponds in places where explosives are not available, but oxyacetylene torches are available. Do not use acetylene instead of propane, its unstable at high pressures, and does not have the energy of propane for some reason. Be careful in all you do, and always move with protection as if the stuff could go off at any time, when working with all explosives, and if it does do that one day, for some damned reason you didn't forsee, you will not be as seriously hurt.
Do watch for static electricity when fooling with highly inflamable mixtures like zinex, armstrong, chlorate/sulfur, etc. Usually a small spark won't have the energy to make it go, but you can't predict the energy in a spark, and some sparks will make things go. Best wear a grounding strap on your foot, a salt water wet sock over one shoe and touching your bare leg will do, and keep the floor moist with a light spray of salt water, will kill all static electricity. Or, use one of the straps computer users wear, or technicians wear.
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