
	Where results make sense

Topic: Low explosives

In the News (Fri 1 Jan 10)

Northern Trust

Marvin Harrison

Peter Chernin

Gary Locke

Match Play

Penelope Cruz

Mickey Rourke

AR Rahman

Danny Boyle

Hugh Jackman

	Explosives - MSN Encarta
		Explosives are grouped into two main classes, low explosives, which burn at rates of inches per second, and high explosives, which undergo detonation at rates of from 914 to 9140 m per sec (1000 to 10,000 yd per sec).
		Explosives used as propellants in rifles and cannon should burn still more slowly, as they are required to deliver a steadily increasing push to the projectile in the barrel of the gun rather than a sudden shock which, if strong enough, might break the gun.
		Two types of explosive are in general use for the propulsion of projectiles in firearms and rockets, and both are commonly called by the generic name of smokeless powder.
	encarta.msn.com /encyclopedia_761577751/Explosives.html (886 words)

	EXPLOSIVES SAFETY (DANGEROUS GOODS CLASS 1)
		An explosive is defined as ‘a material which, when suitably initiated, decomposes with the rapid formation of a large volume of gas at high temperature’.
		Explosives may be solid, liquid or gaseous, and may be single substances or mixtures of different substances.
		Explosive Safety Certificates typically report : ‘sensitiveness to direct mechanical shock’, ‘sensitiveness to friction’, temperature of ignition’, ‘inflammability’, ‘behaviour on inflammation’, ‘chemical stability’, ‘special precautions’, ‘poisonous ingredients’, ‘method of preparing and filling’, and ‘general precautions to be observed during manufacture and use’.
	www.angelfire.com /nb/hazsub/EXPLOSIVESSAFETY.html (1285 words)

	High and low Explosives
		Ahigh explosive may be a pure compound or a mixture of several compounds with additives, such as powdered metals (aluminum), plasticizing oils, or waxes, that impart desired stability and performance characteristics.
		A high explosive is characterized by the extreme rapidity with which its decomposition occurs; this action is known as "detonation." When initiated by a blow or shock, it will decompose almost instantaneously in a manner similar to an extremely rapid combustion or with rupture and rearrangement of the molecules themselves.
		The rapidity with which an explosive develops its maximum pressure is a measure of the quality known as "brisance." A brisant explosive is one in which the maximum pressure is attained so rapidly that a shock wave is formed, and the net effect is to shatter material surrounding or in contact with it.
	www.tpub.com /gunners/2.htm (1038 words)

	Low (Site not responding. Last check: 2007-09-29)
		Low explosives are also defined as a solid mixture of chemicals which burn in the absence of air, but which, when confined, can burn to deflagration.
		Safety fuse may be used without a detonator to ignite low explosives non-electrically.
		Types: As with other low explosives, changes in formulation or grain size varies the rate of reaction and also the amount of gases produced.
	www.fireandsafety.eku.edu /VFRE-99/Recognition/Low/low.htm (527 words)

	Classifications of Explosives
		Military explosives are divided into two general classes, high explosives and low explosives, according to their rates of decomposition.
		The intermediate or auxiliary explosive used with propellants is called an ignition charge and consists of a quantity of flame-producing material sufficient to engulf the propellant grains.
		Pyrotechnic compositions, with respect to rapidity of action, are low explosives because of their low rates of combustion.
	www.ordnance.org /classifi.htm (624 words)

	[No title] (Site not responding. Last check: 2007-09-29)
		They are classified as low or high according to the detonating velocity or speed (in meters or feet per second) at which this change takes place and other characteristics such as their shattering effect.
		Low Explosives: Low explosives change from a solid to a gaseous state slowly aver a sustained period (up to 400 meters or 1,300 feet per second).
		The amount of explosive used is adjusted by a relative effectiveness (RE) factor, which is based upon the shattering effect of the explosive in relation to that of trinitrotoluene (TNT).
	members.fortunecity.com /kaosroolz10048/military_explosives.txt (769 words)

	Military Explosives Chapter 12
		Explosives are classified as low or high explosives accord-ing to their rates of decomposition.
		The procedure for calculating oxygen balance in terms of 100 grams of the explosive material is to determine the number of gram atoms of oxygen that are excess or deficient for 100 grams of a compound.
		In a confined explosion, where the explosive volume is small (such as occurs in the powder chamber of a firearm), practically all the heat of explosion is conserved as useful energy.
	www.fas.org /man/dod-101/navy/docs/fun/part12.htm (5796 words)

	Ohio University Outlook
		The project, which details her proposed method for simultaneously detecting high and low explosives, was among 270 presented by undergraduate, graduate and medical students and post-doctoral fellows during the fourth annual fair.
		Low explosives burn; in order for an explosion to occur, they must be packaged so that pressure can build up inside a container that finally breaks to release the destructive shock.
		The high explosives and derivatized low explosives are extracted from the sample using a fiber, which then is transferred to the gas chromatograph.
	www.ohio.edu /outlook/05-06/January/200f-056.cfm (486 words)

	BRINGING DOWN THE HOUSE: Military Demolitions and Explosives
		Explosives are categorized into two groups: "low" explosives, such as fl powder and ammonium nitrate, and "high" explosives such as TNT and RDX, capable of leveling buildings.
		These types of explosives are powerful, with very high propagation rates that spread using supersonic "detonation." High explosives are driven by the breakdown of the actual molecular structure of the material.
		The explosives used in these charges need to be the fastest of the fast, relying on the shattering effect of the propagation wave to achieve the desired results.
	www.military.com /soldiertech/0,14632,Soldiertech_Explosives,,00.html (1506 words)

	Explosion Theory
		The low explosives exert more of a pushing or heaving effect (when confined), and are generally used as propellant powders.
		Low explosives are sensitive to heat, friction, and shock.
		High-brisant explosives are used for blasting hard rock and low-brisant explosives are used for blasting where a more pushing or heaving than shattering effect is required.
	www.fireandsafety.eku.edu /VFRE-99/Theory/Definitions/definitions-1.htm (1082 words)

	Explosives
		The National Research Council reports that 90 percent of legal explosives are used in mining operations; 7 percent for road building, tunneling, blasting trenches, and other construction tasks; and 3 percent are purchased by thousands of individual users for purposes of smaller commercial jobs like removal of large rocks or tree stumps.
		High and low explosives are used for a variety of commercial and military purposes.
		Explosive materials and bombs are the most common cause of injury during terrorist attacks.
	www.sph.emory.edu /media/EXP/transcript.html (8220 words)

	Explosive material - Wikipedia, the free encyclopedia
		Explosives are classified as low or high explosives according to their rates of decomposition: low explosives burn rapidly (or deflagrate), while high explosives undergo detonation.
		The term "detonation" is used to describe an explosive phenomenon whereby the decomposition is propagated by the explosive shockwave traversing the explosive material.
		All of the standard military explosives may be considered to be of a high order of stability at temperatures of -10 to +35 °C, but each has a high temperature at which the rate of decomposition becomes rapidly accelerated and stability is reduced.
	en.wikipedia.org /wiki/Explosives (5660 words)

	My Explosives Report
		The sensitivity of an explosive is determined by the strength of the molecular bonds.
		The explosive needs to be insensitive to reduce the risk of accidents, it needs to be water resistant (in many cases, but not always) because boreholes are often wet, and it needs to have an appropriate amount of brisance.
		Explosives are placed the same way as in quarrying, in a grid pattern, and are detonated sequentially.
	krimzonpyro.com.ve.carpathiahost.net /ep/infodir/report.html (6908 words)

	Oregon State Police - Arson and Explosives Section EXPLOSIVES SECTION
		Per ORS 480.200 {(1)} (3), revised in 1999 by HB 3190, "Explosive" means a chemical compound, misture or device, the primary or common purpose of which is to function by explosion.
		The term includes, but is not limited to, dynamite, pellet powder, initiating explosives, detonators, safety fuses, squibs, detonating cord, igniter cord and igniters, but excludes fireworks as defined in ORS 480.110 (1), primers and fertilizer, as defined in ORS 633.310.
		Explosives are divided into two distinct groups: low and high explosives.
	www.oregon.gov /OSP/AES/Explosives_Section.shtml (200 words)

	MILNET Briefing: Explosives
		initiating explosive may be increased to ensure proper reaction of the main explosive charge.
		Older commercial explosives (for instance dynamite) were usually created using nitroglycerine, a highly unstable and shock sensitive compound, however, modern explosives no longer use this very dangerous compound.
		That construction would include the surrounding the explosives with toxic nuclear waste materials which are typically thrown out from the explosion and are not reduced in toxicity by the heat and blast of the explosion.
	www.milnet.com /explosives/index.html (1229 words)

	Federal Explosives Laws for Rocketeers (Site not responding. Last check: 2007-09-29)
		It goes on to state that these regulated motors are to be classified as low explosives and must be handled in accordance with 27 CFR Part 55.
		In order to purchase any explosives in your state of residence from a dealer or manufacturer licensed in that state, all you need to do is fill out an explosives transaction record form 5400.4, also known as the Yellow Sheet.
		Explosives may be delivered to another location, but the sale must be made at the place of business.
	www.tamcon.com /emook/explolaw.html (1991 words)

	Explosives
		In general, a high explosive detonates, which is an almost instantaneous molecular breakup, while a low explosive deflagrates, which is rapid burning.
		A low explosive is usually a mixture consisting of a fuel and an oxidizer, while high explosives are usually single component substances.
		Flash powder, a mixture of KClO4 and powdered Al, is a low explosive, but because of its high power, is classified as a "high explosive" by the BATF in their regulations relating to the manufacture/storage of explosives.
	www.physicsforums.com /showthread.php?t=72310 (1521 words)

	Fish and Wildlife Service Manual, 241fw4, Safety Operations - Explosives (Site not responding. Last check: 2007-09-29)
		The use of explosives is restricted to the operations for which there is no suitable alternative means for performance of the activity.
		Explosives will be secured to prevent shifting of the load or dislodgment from the vehicle.
		Whenever explosives are used or stored at a facility, the station safety plan will include specific instructions concerning the storage and use of such explosives and the safeguards to be taken in an emergency situation.
	www.fws.gov /policy/241fw4.html (3137 words)

	Bullets for Beginners - Background
		This explosive train is termed a propellant train and consists primarily of low explosives instead of high explosives and has a primer, an igniter or igniting charge, and a propelling charge.
		Ignition of a small quantity of sensitive explosive, the primer (lead azide), is initiated by a blow from the firing pin and is transmitted and intensified by the igniter so that the large, relatively insensitive propelling charge burns in the proper manner and launches the projectile.
		In view of ammunition and explosives storage principles and the considerations for mixed storage, ammunition and explosives are assigned to the appropriate one of 13 CGs (A through H, J, K, L, N, and S).
	www.fas.org /man/dod-101/sys/land/bullets3.htm (1899 words)

	BASIC EXPLOSIVES THEORY
		High explosives are also called detonating, and low explosives are referred to as burning mixtures.
		Because of these differences, in order for a low explosive to explode, it must be contained in a strong enclosure.
		High explosives, although they usually can be detonated without being enclosed, are more powerful when they are confined.If all this seems confusing, it will be explained a little better later.
	www.angelfire.com /theforce/explozion/BET.html (846 words)

	[No title] (Site not responding. Last check: 2007-09-29)
		How To Make Low Explosives -------------------------- Up to this point, I have referred only to high explosives, but there are many formulas for low explosives, which, although they do not have the power or impact of the high explosives, are generally speaking safer to use and handle.
		It may seem at first that an explosive compound that has less power is a disadvantage, but this is not true.
		Therefore, low explosives have a definite purpose and use, and are not interchangeable with high explosives.
	www.textfiles.com /anarchy/INCENDIARIES/lowexplo.txt (581 words)

	The MSDS HyperGlossary: Explosive
		(noun) An explosive is a compound or mixture susceptible (by heat, shock, friction or other impulse) to a rapid chemical reaction, decomposition or combustion with the rapid generation of heat and gases with a combined volume much larger than the original substance.
		Explosives can be broken into two general categories that reflect the rate of the transformation.
		Low explosives change into gases by burning or combustion.
	www.ilpi.com /msds/ref/explosive.html (520 words)

	Storage Types
		Explosive materials shall not be placed directly against interior walls of a storage facility.
		Explosive materials must be removed to type 1 or 2 magazine.
		No indoor storage facility for storage of low explosives shall be located in a residence or dwelling.
	www.info-central.org /regulatory/orangebook/storage.html (1331 words)

	IPI Explosive Chemistry
		This explosive compound is a white, crystalline solid with a nitrogen content of 37.84%.
		HMX is used as an explosive charge when desensitized, as a booster charge in mixtures with TNT (octols), and as an oxidizer in solid rocket and gun propellants.
		PBX is a term applied to a variety of explosive mixtures which have high mechanical strength, good explosive properties, excellent chemical stability, relative insensitivity to handling and shock, and high thermal output sensitivity.
	www.islandgroup.com /ExplosiveChemistry.html (674 words)

Try your search on: Qwika (all wikis)