نتایج جستجو برای: mining geology
تعداد نتایج: 96827 فیلتر نتایج به سال:
Proceedings of GeoComputation ‘97 & SIRC ‘97 Effective mineral exploration requires a detailed knowledge of the factors and processes which result in the formation of economic deposits. To apply this knowledge, a sound three-dimensional understanding of the geology and structure of a region is required. In most cases, surface geology can be mapped with a high degree of accuracy, however, the ge...
FOR MERIDIANI JAROSITE FORMATION. J. P. Greenwood 1 , M. S. Gilmore 1 , R. E. Blake 2 , A. M. Martini 3 , M. Gomes 1 , S. Tracy 3 , M. D. Dyar 4 , J. A. Gilmore 5 , and J. Varekamp 1 , 1 Dept. of Earth & Environmental Sciences, Wesleyan University, Middletown, CT 06459, 2 Dept. of Geology & Geophysics, Kline Geology Laboratory, Yale University, New Haven, CT 06520, 3 Dept. of Geology, Amherst C...
Several disciplines like Environmental Toxicology, Epidemiology, Public Health and Geology have been the basis of the development of Medical Geology in Uruguay during the last decade. The knowledge and performance in environmental and health issues have been improved by joining similar aims research teams and experts from different institutions to face environmental problems dealing with the po...
This report summarizes the major findings of a United States Geological Survey (USGS)-funded project entitled the "West-Central Florida Coastal Studies Project" and managed by the USGS Center for Coastal Geology and Regional Marine Studies in St. Petersburg, FL. USGS scientists from Woods Hole and Menlo Park were involved as well. This project was a co-operative five-year venture with scientist...
A project is underway to map die indoor radon potential for New York State at the township level. Through a detector distribution program the New York State Department of Health has a database of over 36,000 basement screening measurements. The address field for the indoor measurement data is being linked to latitude and longitude coordinates using data files containing coordinate information. ...
BACKGROUND In 2010, Médecins Sans Frontières discovered a lead poisoning outbreak linked to artisanal gold processing in northwestern Nigeria. The outbreak has killed approximately 400 young children and affected thousands more. OBJECTIVES Our aim was to undertake an interdisciplinary geological- and health-science assessment to clarify lead sources and exposure pathways, identify additional ...
Australia produces over 90% of the world’s precious opal from highly weathered Cretaceous sedimentary rocks within the Great Artesian Basin. Since opal was first discovered around 1870 until the present day, opal mining has been carried out by private operators working a claim no larger than 50 50 m, usually in the direct vicinity of areas that have yielded precious opal in the past. Currently ...
fXY = fYX. Problems of this type can be multiplied indefinitely, and a general theory of partial differentiation in the large to cover all such problems is desirable. We have started to construct such a theory. Among the various theorems which we have proved are three which we announce in this note as follows. THEOREM 1. Let f(x, y) be of class C' on an open point set H. Let the four second par...
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