نتایج جستجو برای: metallic mineral industry

تعداد نتایج: 295309  

2013
Glenn J. MACPHERSON Christopher L. ANDRONICOS Luca BINDI Vadim V. DISTLER Michael P. EDDY John M. EILER Yunbin GUAN Lincoln S. HOLLISTER Alexander KOSTIN Valery KRYACHKO William M. STEINHARDT Marina YUDOVSKAYA Paul J. STEINHARDT

A new meteorite find, named Khatyrka, was recovered from eastern Siberia as a result of a search for naturally occurring quasicrystals. The meteorite occurs as clastic grains within postglacial clay-rich layers along the banks of a small stream in the Koryak Mountains, Chukotka Autonomous Okrug of far eastern Russia. Some of the grains are clearly chondritic and contain Type IA porphyritic oliv...

2007
I. E. NEWNHAM

The application of chemistry to the technological requirements of the mineral industry is attended by problems of communication, isolation and application. Examples of research related to mineral exploration, underground fires, and the treatment of refractory ores suggest that the effective mineral chemist must learn the language of geology, metallurgy and engineering; that he must extend his s...

Journal: :Occupational medicine 2014
Anthony Seaton

What do we know about ageing at work? Evidence-based fitness for duty and health in fire fighters. The current enthusiasm for fracking takes me back to the oil crisis of the late 1970s. I had been asked to see a post-thoracotomy patient and, when he recovered, found that his lesion had been pneumoconiotic. When I enquired which mine he worked in, he told me that it had been a shale mine and sin...

2013
IPSEET CHOUDHURY

This paper with the title Waste Management in Mining Industry mainly deals with the large amount of waste generated by the mining industry in the process of extraction of minerals which is a great threat to the environment leading to air pollution soil pollution and many other hazardous effects to the environment as well as human lives . This paper broadly discusses about the different type of ...

2001
Keith Spence

The notion of “value” has always been a subjective and contentious issue. Indeed, Value is in the eye of the beholder. There are varied methods and practices for valuing property, as there are industries in which they are applied. For example, there are “replacement value”, “insurance value, “salvage value”, “appraised value”, “book value” and “fair market value”, to name a few, although in the...

Journal: :MATEC web of conferences 2021

Recent advances in information and artificial intelligence technologies, more specifically Fuzzy Logic Inference Systems (FIS), have provided a new approach solving many problems related to mineral industry. The aim of the current study is examine application FIS resources extractive industry by performing recent literature review (2010-2020) studies published engineering earth science oriented...

Journal: :British journal of industrial medicine 1963
B CORRIN

The discrepancy in previous reports of the action of aluminium on the lung may be explained by differences between stamped and granular aluminium powders. A stamped powder of the variety causing pulmonary fibrosis showed a brisk reaction with water, but a granular powder was unreactive. This difference is primarily due to the granular particles being covered by inert aluminium oxide, the format...

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