نتایج جستجو برای: mine planning

تعداد نتایج: 223581  

Journal: :Mining 2021

It is important that the strategic mine plan makes optimum use of available resources and provides continuous quality ore to drive sustainable mining profitability. This requires development a well-integrated strategy options for surface and/or underground their interactions. Understanding current tools methodologies used in industry transitions planning are essential dealing with complex deep-...

Journal: :Occupational and environmental medicine 2008
D Mirabelli R Calisti F Barone-Adesi E Fornero F Merletti C Magnani

BACKGROUND Chrysotile from the mine in Balangero, Italy is considered to be free of tremolite. In a cohort study of miners and millers only two pleural cancers were reported, a finding considered to indicate that chrysotile has a low potency for inducing mesothelioma. However, follow-up ended in 1987 and white-collar workers and the employees of subcontractors were not studied. METHODS To com...

2015
Zhihong Huang Wenhua Xiang Yu’e Ma Pifeng Lei Dalun Tian Xiangwen Deng Wende Yan Xi Fang

The planting of trees on mine wastelands is an effective, long-term technique for phytoremediation of heavy metal-contaminated wastes. In this study, a pot experiment with seedlings of Koelreuteria paniculata under six treatments of local mine wastes was designed to determine the major constraints on tree establishment and to evaluate the feasibility of planting K. paniculata on manganese mine ...

2015
Yejin Yang Jin Kim

In recent, the placement of backfill in underground mines has emerged as a new paradigm in research as it not only improves safety but also allows disposal of byproducts including coal ash. In this regards, this paper addresses the backfilling challenges in limestone mine to prevent sinkhole and subsidence. Limestone mines, generally regarded as being safer than coal and metal mines, have been ...

2015

ABStrAct Background: An estimated 1.7 bil­ lion people worldwide are affected by obesity­related comorbidities such as cardiovascular disease and diabetes. Bariatric surgery is recog­ nized as an effective treatment for morbid obesity. A study of patients at a Bc clinic was undertaken to deter­ mine if combining bariatric surgery with comprehensive care provided by a multidisciplinary team impr...

Journal: :The Science of the total environment 2008
M Simón I García F Martín M Díez F del Moral J A Sánchez

The soils affected by the spill of a pyrite mine were analysed in 100 sampling points at three depths (0-10, 10-30, and 30-50 cm) in 1998 (after the tailings were removed), 1999 (after the cleaning of the highly contaminated areas), and 2004 (after the tilling of the upper 20-25 cm). The comparative study reveals that the removal of the tailings left a heterogeneous distribution pattern of the ...

Journal: :Occupational and environmental medicine 1997
M Chiaradia B L Gulson K MacDonald

OBJECTIVE To evaluate the pathway of leaded dust from a lead-zinc-copper mine to houses of employees, and the impact on blood lead concentrations (PbB) of children. METHODS High precision lead isotope and lead concentration data were obtained on venous blood and environmental samples (vacuum cleaner dust, interior dustfall accumulation, water, paint) for eight children of six employees (and t...

Journal: :Journal of Earth and Marine Technology 2023

The mining planning and design were carried out in PT. Tanjung Alam Jaya, a coal company South Kalimantan. intends to re-mine the Pit X area requires comprehensive mine approach achieve its objectives. study focuses on long-term planning, specifically optimizing pit while considering company's specified stripping ratio limit calculating potential reserve volumes. research aims develop an optimi...

Journal: :Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering 2007
Barbara Palumbo-Roe Ben Klinck

This study characterises the total As concentrations and As bioaccessibility in 109 soils from Devon Great Consols Mine, an abandoned Cu-As mine in Devon, SW England, UK and discusses the soil and mineralogical factors that influence the bioaccessibility of this element. These data provide the basis for developing more accurate exposure estimates for use in human health risk assessments. The me...

Journal: :Journal of bacteriology 2003
Lu-Yan Ma Glenn King Lawrence Rothfield

Interactions between the MinD and MinE proteins are required for proper placement of the Escherichia coli division septum. The site within MinE that is required for interaction with MinD was mapped by studying the effects of site-directed minE mutations on MinD-MinE interactions in yeast two-hybrid and three-hybrid experiments. This confirmed that the MinE N-terminal domain is responsible for t...

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