scholarly journals The wealth gifted to the large-scale copper mining industry in Chile: New estimates, 2005-2014

CEPAL Review ◽  
2018 ◽  
Vol 2018 (124) ◽  
pp. 99-119
Author(s):  
Gino Sturla Zerene ◽  
Ramón E. López ◽  
Eugenio Figueroa B. ◽  
Simón Accorsi O.
1973 ◽  
Vol 36 (7) ◽  
pp. 378-382 ◽  
Author(s):  
J. Robert Cherneff

A growing number of communities are finding that municipal magnetic separation of steel cans is an ecological, economic, and technological solution to part of their solid waste problem. Steel's unique magnetic property permits the large-scale efficient reclamation of steel cans from collected municipal garbage. Magnetic separation enables municipalities to extend the life of scarce landfill sites, produces revenues from the sale of scrap cans, lowers the cost of waste disposal, and helps conserve a valuable resource through recycling. It also leads to salvaging vastly greater numbers of used cans than do the volunteer collection programs. Successful recycling programs require that economically viable markets be maintained for reclaimed materials. America's steel industry is actively developing uses for reclaimed steel cans. Steel producers have agreed to accept all reclaimed steel cans for remelting into new steel products. Also, the copper mining industry uses salvaged cans to produce copper from low grade ore. Detinners and ferroalloy plants offer additional markets for salvaged steel cans.


Author(s):  
T. V. Galanina ◽  
M. I. Baumgarten ◽  
T. G. Koroleva

Large-scale mining disturbs wide areas of land. The development program for the mining industry, with an expected considerable increase in production output, aggravates the problem with even vaster territories exposed to the adverse anthropogenic impact. Recovery of mining-induced ecosystems in the mineral-extracting regions becomes the top priority objective. There are many restoration mechanisms, and they should be used in integration and be highly technologically intensive as the environmental impact is many-sided. This involves pollution of water, generation of much waste and soil disturbance which is the most typical of open pit mining. Scale disturbance of land, withdrawal of farming land, land pollution and littering are critical problems to the solved in the first place. One of the way outs is highquality reclamation. This article reviews the effective rules and regulations on reclamation. The mechanism is proposed for the legal control of disturbed land reclamation on a regional and federal level. Highly technologically intensive recovery of mining-induced landscape will be backed up by the natural environment restoration strategy proposed in the Disturbed Land Reclamation Concept.


2015 ◽  
Vol 57 (5) ◽  
pp. 367-372 ◽  
Author(s):  
Deepankar Sharma ◽  
Priya Bhatnagar

Purpose – This paper aims to examine the community development approaches of large-scale mining companies, with particular reference to how they may engender community dependency. Design/methodology/approach – The paper begins with a review of corporate social responsibility (CSR) in the mining industry, corporate community initiatives and the problem of mining dependency at a national, regional and local levels. Findings – It outlines some of the reasons why less-developed countries (LDCs) experience under-development and detrimental effects as a result of their linkages with industrialized countries. LDCs are not able to take advantage of advanced technology and management skills due to being relatively poor in capital and skills, and foreign technologies compete unfairly with and destroy local production techniques, creating a pool of unemployable “marginalized” people. Holder’s of investments in LDCs demand annual returns for continued support – profits are taken out of the country or guaranteed by tax concessions. Unwillingness of foreign firms to train local people to take over management positions. Originality/value – This paper explores how the need to address sustainability issues has affected communities, and whether community development initiatives have been effective in contributing to more sustainable communities.


2012 ◽  
Vol 87 (2) ◽  
pp. 117-124 ◽  
Author(s):  
Andreas Seidler ◽  
Thomas Brüning ◽  
Dirk Taeger ◽  
Matthias Möhner ◽  
Katarzyna Gawrych ◽  
...  

Electronics ◽  
2019 ◽  
Vol 8 (11) ◽  
pp. 1227 ◽  
Author(s):  
Carrasco ◽  
Álvarez ◽  
Velázquez ◽  
Concha ◽  
Pérez-Cotapos

One of the most widely used electro-mechanical systems in large-scale mining is the electric motor. This device is employed in practically every phase of production. For this reason, it needs to be inspected regularly to maintain maximum operability, thus avoiding unplanned stoppages. In order to identify potential faults, regular check-ups are performed to measure the internal parameters of the components, especially the brushes and brush-holders. Both components must be properly aligned and calibrated to avoid electric arcs to the internal insulation of the motor. Although there is an increasing effort to improve inspection tasks, most inspection procedures are manual, leading to unnecessary costs in inspection time, errors in data entry, and, in extreme cases, measurement errors. This research presents the design, development, and assessment of an integrated measurement prototype for measuring spring tension and other key parameters in brush-holders used in electric motors. It aims to provide the mining industry with a new, fully automatic inspection system that will facilitate maintenance and checking. Our development research was carried out specifically on the brush system of a SAG grinding mill motor. These machines commonly use SIEMENS motors; however, the instrument can be easily adapted to any motor by simply changing the physical dimensions of the prototype.


Safety ◽  
2020 ◽  
Vol 6 (1) ◽  
pp. 9 ◽  
Author(s):  
Eric Stemn ◽  
Florence Ntsiful ◽  
Marconi Afenyo Azadah ◽  
Theophilus Joe-Asare

Background: This research sought to understand the perspective of mineworkers regarding incident investigations, with the objective of identifying incident investigations improvement opportunities. First, through interviews, the research sought to identify the causal factors considered during investigations and the reasons for conducting investigations in the Ghanaian mining industry. Secondly, through questionnaire surveys, the study focused on understanding the extent to which a large sample of mineworkers considered the identified causal factors and investigation reasons relevant and applicable in their mine. Method: Data were collected from 41 participants through interviews and 659 respondents through surveys, and the data were analyzed through thematic, content, and statistical analyses, including descriptive statistics, one-way ANOVA, and correlation analysis. Result: The interviews led to the identification of five and nine categories of incident causal factors and reasons for investigating incidents, respectively. The results suggested a focus on workers’ unsafe acts as the main incident causal factor and identifying the person who caused the incident as one of the major reasons for investigating incidents, as these two factors where the modal choice from both the interviews and survey across all five mines. The results further showed that concerning the accident causal factors and the reasons for investigating incidents, no significant difference was observed between the perspectives of mineworkers involved in investigations and mineworkers with no investigation responsibilities. Conclusion: It can be concluded from the results that talking to ordinary mineworkers does not generate innovative safety responses in this context, as the workers believe whatever they are taught, without critiquing it. Again, the focus on workers’ behavior as an accident causal factor is an indication of single-loop learning in contrast to double-loop learning, and its implication as well as opportunities to strengthen incident investigation focusing on improving organizational safety have been discussed.


1999 ◽  
Vol 13 (3) ◽  
pp. 483-502 ◽  
Author(s):  
Edward Fieldhouse ◽  
Emma Hollywood

Official counts of unemployment in the coalfields have not reflected the large-scale losses of thousands of jobs from the mining industry in the 1980s and 1990s. Recent studies have suggested that there are indeed high incidences of unemployment among ex-miners and that much of the unemployment in the coalfields is `hidden', masked by the removal of miners from the official unemployment register through early retirement or being classed permanently sick. This paper examines how miners have been absorbed into the labour market over a ten-year period, between 1981 and 1991. Using data from the ONS Longitudinal Study a sample of miners are identified in 1981 and their labour market position in 1991 examined. The data are used to highlight changes in occupation, employment status and social class. In addition, regional differences in unemployment and joblessness are assessed.


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