نتایج جستجو برای: iron ore mine tailing

تعداد نتایج: 172997  

Journal: :Journal of The South African Institute of Mining and Metallurgy 2023

Spontaneous combustion during coal mining operations is a major problem that affects the health and safety of workers causes environmental problems. The phenomenon associated with presence coal, shale, pyrite. In 2020, premature detonation incident occurred at an iron ore mine where waste material contains black carbonaceous shale units known to be spontaneous propensity properties samples shal...

Journal: :The Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists 1962

The block economic value (BEV) of a single-metal deposit is calculated based on the metal content and the related costs. The common methods available for calculating BEV are just based upon the profitable elements, and the effects of undesirable elements on BEV are not considered. However, in multi-element deposits, the effects of other elements existing in the blocks on BEV should be considere...

Journal: :British journal of preventive & social medicine 1970
J T Boyd R Doll J S Faulds J Leiper

The objective of this research is to determine all processes in the magmatic evolution and related hydrothermal activities that created the volcanic rocks and associated ore-forming systems of the Bafq ‎mining district. Several iron oxide-apatite (IOA) deposits were investigated in this area with a focus on the Sechahun ore deposit. The Bafq ‎mining district is well known for hosting significan...

Journal: :Acta geodaetica et geophysica 2021

Abstract The paper presents the latest results of Monte Carlo inversion IP data in areas water base protection and ore exploration. method determining time constant spectrum using parameters characterizing degree environmental contaminations deposition are presented. Among field applications Hungary, investigation ionic pollution Ráckeve characterization Felsőtelekes waste dump Rudabánya iron m...

Journal: :American journal of industrial medicine 1996
L Laflamme V L Blank

The study investigated whether occupational accident risks were equally distributed across age categories over time in the context of production reorganization and work rationalization in a Swedish iron ore mine between 1980 and 1993. Three phases of reorganization, defined by productivity levels, and four age categories were related to age-related accident risk ratios using the Poisson-regress...

Journal: :نشریه دانشکده فنی 0
مجید میبدیان دانشگاه تهران حسین معماریان دانشگاه تهران مهدی زارع پژوهشگاه زلزله

sarcheshmeh copper mine, with the final reserves of 828 million tons of sulfur ore and average grade of 0.74%, is known to be the largest open pit of iran and most probably the second largest copper mine in the world. this mine is located in the seismotectonic zone of central-iran, and 23 km away from the 150 km long rafsanjan active fault.in this study the vulnerability of the west wall of the...

2007
Björn Kvarnström

A traceability system simplifies investigation of causes of product failures and is therefore vital for many industries. Traceability systems are extensively used in manufacturing industries, but creating traceability in continuous processes implies great challenges. The aim of this paper is to illustrate how traceability can be achieved in the distribution chain for iron ore pellets. Radio fre...

Journal: :The Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists 1962

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