primary blasting

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• Primary and secondary explosives — Primary and secondary are the two distinct classifications of explosives.A primary explosive is an explosive that is extremely sensitive to stimuli such as impact, friction, heat, or electrostatic sources of initiation. Two examples are lead… …   Wikipedia

• Blasting cap — A blasting cap is a small explosive device generally used to detonate a larger, more powerful explosive such as dynamite.Blasting caps come in a variety of types, some of which are: non electric caps, electric caps and fuse caps. They are used in …   Wikipedia

• explosive — explosively, adv. explosiveness, n. /ik sploh siv/, adj. 1. tending or serving to explode: an explosive temper; Nitroglycerin is an explosive substance. 2. pertaining to or of the nature of an explosion: explosive violence. 3. likely to lead to… …   Universalium

• mining — /muy ning/, n. 1. the act, process, or industry of extracting ores, coal, etc., from mines. 2. the laying of explosive mines. [1250 1300; ME: undermining (walls in an attack); see MINE2, ING1] * * * I Excavation of materials from the Earth s… …   Universalium

• tunnels and underground excavations — ▪ engineering Introduction        Great tunnels of the world Great tunnels of the worldhorizontal underground passageway produced by excavation or occasionally by nature s action in dissolving a soluble rock, such as limestone. A vertical opening …   Universalium

• Explosive material — A number of 1.25lb M112 Demolition Charges, consisting of a C 4 compound, sit atop degraded weaponry scheduled for destruction An explosive material, also called an explosive, is a reactive substance that contains a great amount of potential… …   Wikipedia

• HAZMAT Class 1 Explosives — Explosives are any substance or article, including a device, which is designed to function by explosion or which, by chemical reaction within itself is able to function in a similar manner even if not designed to function by explosion (unless the …   Wikipedia

• coal mining — Coal was very important in the economic development of Britain. It was used as fuel in the factories built during the Industrial Revolution and continued to be important until the 1980s. The main coalfields are in north east England, the north… …   Universalium

• Explosives shipping classification system — The matrix of the various United Nations Explosives shipping classification system and typical uses. Each classification consists of a Class Number that indicates the shipping hazard and a Compatibility group suffix describing the type of… …   Wikipedia

• Dry ice — Sublimation of dry ice when placed on the surface of water at room temperature Dry ice, sometimes referred to as Cardice or as card ice , is the solid form of carbon dioxide. It is used primarily as a cooling agent. Its advantages include lower… …   Wikipedia

• Acción de Lucha Anti-Petrola — Formed in December 1999, Acción de Lucha Anti Petrola (ADELA) is a Costa Rican grassroots environmental group created to oppose offshore oil exploration and drilling. [ [http://grupoadela.org/newsite/index.php?page=17 lang=eng/ ADELA, A Story of… …   Wikipedia