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Encyclopedia of Global Resources part 36

Encyclopedia of Global Resources part 36 provides a wide variety of perspectives on both traditional and more recent views of Earth's resources. It serves as a bridge connecting the domains of resource exploitation, environmentalism, geology, and biology, and it explains their interrelationships in terms that students and other nonspecialists can understand. The articles in this set are extremely diverse, with articles covering soil, fisheries, forests, aluminum, the Industrial Revolution, the U.S. Department of the Interior, the hydrologic cycle, glass, and placer mineral deposits. . | 320 Dynamite Global Resources drought occurred in the region during the 1950 s the mid-1970 s and the late 1980 s. More vegetative cover on the land federal crop insurance and more knowledgeable farmers resulted in fewer dust storms less erosion and less financial strain on farmers. David M. Diggs See also Civilian Conservation Corps Desertification Drought Erosion and erosion control Natural Resources Conser vation Ser vice Soil management Weather and resources. Dynamite Category Obtaining and using resources The invention of dynamite has had an effect on the procuring of coal silver gold and any other materials which are mined by tunneling. Definition Many different formulations are called dynamite but all are stabilized forms of nitroglycerine. Dynamite is an explosive that is highly dense so that a large explosive power is available from a small volume of material. Overview Explosives have been a part of underground mining ever since their discovery. Until the mid-1800 s the only explosive available was black powder which was lacking in power and created flames that constituted a fire or dust explosion hazard in mines. Nitroglycerine was discovered by an Italian chemist Ascanio Sobrero in 1847. It is an oily organic liquid that is a highly powerful explosive and an extremely unstable chemical. Temperature increases or mechanical shock readily detonate nitroglycerine. Although it did find use in the mining industr y the hazard of premature explosions was extreme and the industr y searched for an alternative. The material known as dynamite was discovered by Swedish inventor Alfred Nobel in 1867. After several years of experiments aimed at stabilizing nitroglycerine Nobel found that when the liquid was absorbed by diatomaceous earth the mixture was safe to handle and did not explode unless a blasting cap was used to initiate the reaction. Nobel went on to commercialize the production of dynamite by building manufacturing facilities on a worldwide basis and thereby