Добрый день, Коллеги. Важное сообщение, просьба принять участие. Музей Ферсмана ищет помощь для реставрационных работ в помещении. Подробности по ссылке
В первом разделе приведены размеры загрязненных земель к началу ХХI века по каждому административному субъекту Российской Федерации. Оценивались площади территорий, подверженных хроническому техногенному загрязнению в сфере влияния городских поселений и магистральных дорог. Загрязненные земли занимают 4% российской территории (683 тыс. кв. км). По Федеральным округам этот показатель находится в интервале от 0,7% (Дальневосточный округ) до 19,3% (Центральный округ).
Shengrong Xie, Fangfang Guo and Yiyi Wu Control Techniques for Gob-Side Entry Driving in an Extra-Thick Coal Seam with the Influence of Upper Residual Coal Pillar: A Case Study
Yunbing Hou, Junqi Cui and Ruipeng Liu Study on the Long-Distance Gas Pre-Drainage Technology in the Heading Face by Directional Long Borehole
Shengrong Xie, Yiyi Wu, Fangfang Guo, Hang Zou, Dongdong Chen, Xiao Zhang, et al. Application of Pre-Splitting and Roof-Cutting Control Technology in Coal Mining: A Review of Technology
Yang Liu, Tong Zhang, Jun Wu, Zhengyang Song and Fei Wang Experimental Study on Deformation Behavior and Permeability Evolution of Sandstone Responding to Mining Stress
The objective of this chapter is to provide a foundation for the rest of the Handbook. It does so by initially describing the history and outlining the purpose, which is then followed by a definition of its structure or organization, which is immediately succeeded by a Reader’s Guide for each chapter. Finally, it alerts the wader to the current rush of events that make for a short shelf life for some of the presented information, especially laws in force and controlling political events. Nevertheless, this Handbook is designed to be more a manual stressing basic principles that change little, rather than a textbook supplier of details that are constantly in transition. As such, the Authors and Editors have tried to focus upon more universal design concepts in the field. Even if specific examples become dated, the Handbook is meant to be an enduring repository of basic engineering theories that form the foundation of environmental protection in the mining industry. <...>
Av the mining industry continues to grow, so too do its environmental impacts and the need for efficient reclamation methods. The mining industry produces metals that are essential for global economic development. To do so, mining operations exploit ore deposits. For these ore bodies, both those exploited by open pits and underground mines, the proportion of the economic value compared to the whole excavated rock is very low. which implies that large quantities of solid wastes are produced annually, particularly waste rocks and mine tailings (Lottemioser 2007). Waste rocks are economically nonviable material excavated to reach ore-bearing rock. They are usually stored in waste rock piles at the surface. Tailings are ground rock particles resulting from ore processing.
This report is a product of the Committee on USGS Water Resources Research, which provides consensus advice to the Water Resources Division (WRD) of the U.S. Geological Survey (USGS) on scientific, research, and programmatic issues. The committee is one of the groups that works under the auspices of the Water Science and Technology Board (WSTB) of the National Research Council.
В монографии систематизированы и обобщены данные о миграции фосфора на разных этапах глобального гидрологического цикла. Приведены новые оценки среднего содержания фосфора в атмосферном аэрозоле, атмосферных осадках, водах первичной гидрографической сети, средних и крупных рек мира. Определены потоки фосфора в атмосфере, материковом стоке, Мировом океане.
Дан комплексный геолого-экономический анализ наиболее важных особенностей формирования минерально-сырьевой базы Африканского континента на современном этапе с учетом ретроспективных (с конца XIX в.) и перспективных (до 2010 г.) тенденций. Рассмотрена геолого-экономическая отраслевая характеристика различных видов твердых полезных ископаемых, учтена роль африканского минерального сырья в мировом капиталистическом хозяйстве и в индустриализации развивающихся стран континента. Для специалистов, занимающихся экономикой минерального сырья за рубежом.
About 2,200 years ago a scholarly librarian in charge of the prestigious collections of the museum at Alexandria conducted an elegant exercise in logic and experimentation. Using seemingly unrelated bits of information such as the observation of the penetration of sunlight into a well in the city of Syene, the speed of a camel caravan, and the shadow cast by an obelisk in Alexandria, Eratosthenes calculated a remarkably accurate estimate of the circumference of the earth (Wilford 1981).
The purpose of this book is to provide the reader with guidance on the development and implementation of cost-effective and defensible environmental sampling programs that are designed to collect data needed to • Defi ne the nature and extent of contamination
• Calculate baseline human health and ecological risk • Identify contaminant migration pathways • Predict rates of contaminant migration • Evaluate the viability of potential remedial alternatives • Support treatability testing • Assess the effectiveness of a remedial alternative during implementation • Determine if remedial action objectives have been met • Dispose of waste material properly
