نتایج جستجو برای: ancient gold mining activities
تعداد نتایج: 575299 فیلتر نتایج به سال:
This paper studies the exposure of the stock prices of Australian gold-mining firms to changes in gold prices and the valuation effects of gold price exposure. Goldmining firms have significant gold price exposure; the price of the average goldmining stock moves 0.76% for each 1.00% change in Australian-dollar-denominated gold prices. Evidence from the behaviour of stock price sensitivities sug...
Gold Mosaic glass has been used to decorate items and places since ancient time. The glass structure is divided into three layers: cover glass, gold layer and glass substrate. In this study, the composition of old-styled Thai gold mosaic glass samples was analyzed using SEM/EDX and Raman spectroscopy. It was found that the glass composition was sodiumsilicate based glass. Raman spectroscopy als...
The implementation of Corporate Social Responsibility (CSR) programmes in Indonesia still largely involves charity to the community or efforts earn a good name wider sphere. This is most especially case gold mining, where both large companies and mining use hazardous materials such as mercury which cause various types environmental damage. study aims look at series CSR activities that have been...
The Chah-Bagh gold occurrence is located in Muteh mining district, in the central part of the Sanandaj-Sirjan zone. Gold mineralization occurs in ductile to ductile-brittle shear zones and is comparable with orogenic gold deposits. Silicification and sulfidization are the most important hydrothermal alteration features in the inner parts of altered shear zones and coincide most closely with the...
Ivory Coast is a country rich in base metals and precious minerals: gold, manganese, diamond, iron, bauxite, cobalt nickel. These natural resources are exposed to destruction fragmentation by mining activities. The artisanal small-scale exploitation of gold increasingly practiced our rural areas. activities escape often the control monitoring administration. In order better constrain these on e...
The gold-mining areas of Bolívar State in Venezuela are characterized by social, economic, and cultural factors that may facilitate transmission of HIV and other sexually transmitted diseases (HIV/STDs). For instance, gold-mining sites tend to have high concentrations of men between the ages of 20 and 45. They serve as a magnet for female commercial sex workers (FCSWs), especially if education ...
Introduction Artisanal gold mining is an activity ensuring the survival of about 700,000 families in Burkina Faso with a considerable contribution to the national economy. Techniques and chemicals used in the operation, have adverse impacts on health and the environment. Our study aims to evaluate the perceptions and knowledge of these different impacts among artisanal gold miners. Methods A ...
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