Download e-book for kindle: An environmental study of artisanal, small, and medium by Gary McMahon

By Gary McMahon

ISBN-10: 0821344285

ISBN-13: 9780821344286

"Mining exploration funding within the Latin American and Caribbean zone has elevated a hundred thirty percentage within the final 5 years, a determine which raises to 500 percentage, if Chile is excluded." Governments have remodeled mining laws to permit deepest funding whereas turning into extra delicate to environmental elements. In mild of this laws, this document examines the environmental results of artisanal, small, and medium mines in 3 Latin American international locations: Bolivia, Chile, and Peru. 4 of crucial parts to be thought of are: • The age of the mine • administration of tailings • The heterogeneity of the artisanal and small mine sectors • The expanding have to take cultural issues into consideration within the selection making method. The paper includes result of the experiences at the numerous mining sectors, procedure and coverage options, and nation research summaries.

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Extra info for An environmental study of artisanal, small, and medium mining in Bolivia, Chile, and Peru, Volumes 23-429

Sample text

Dry sierras and deserts). If one compares the situation of hard rock gold miners in the Ica-Arequipa region of Peru with the cooperative miners in the Altiplano area of Bolivia, the heterogeneity of the sector is dramatically displayed. In Ica-Arequipa the ASM usually work veins which are not economically viable for large firms as they are too small. Nevertheless, the average income of the miners is about $3,000 per year, well above most other income alternatives. The study shows that these are often economically viable even if environmental costs are included.

Paradoxically, some of the most important innovations to reduce water use pose new threats to water supplies. In particular, concentration processes using leaching, which are becoming common in the copper industry in Chile, use much less water than traditional methods based on flotation, but they can also require more hazardous reactive agents such as cyanide and sulfuric acid. When these processes are being used, it is essential that the ground is covered with impermeable materials. Finally, the creation of fully functioning markets for water is an essential step in its conservation.

There is also a need to work together with medium and large mines, especially with respect to the construction or use of shared tailing dams and processing facilities. In the mechanized small mine sector it may be possible to use presumptive charges or deposits to formalize the sector and help protect the environment. The Peruvian study recommends a presumptive tax on the use of barges and deposits on the entry of front-end loaders into the Amazonian region. The latter would be returned when inspection revealed a proper closure of the activities.

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An environmental study of artisanal, small, and medium mining in Bolivia, Chile, and Peru, Volumes 23-429 by Gary McMahon

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