tailings sampling Articles
-
Effect of old mining activities on nutrient and toxic elements concentration in the biomass of Norway spruce (Picea abies L. Karst.) and European Birch (Betula pendula L.)
Metal mining activities often lead to plant and soil contamination in the surrounding environment. This article characterises the contaminated site and the effects of acidification and heavy metal pollution on two plant species: European birch and Norway spruce. The research was conducted in the surroundings of a former polymetalic mine near the town of Zlate Hory, Czech Republic. A by-product of ...
-
Geochemical modelling of the evolution and fate of metal pollutants arising from an abandoned gold mine tailings facility in Johannesburg
Analytical techniques were combined with geochemical modelling to study the release mechanisms of pollutants from an abandoned gold mining tailings storage facility near Johannesburg. Inverse modelling of sampled tailings pond water and experimental single extractions using various solutions indicated which combination of naturally occurring leaching solutions were likely to give rise to the ...
-
Quantile Estimation - When More than the Mean and the Standard Deviation Are Needed
Q: Which method of quantile estimation should be used? A: The estimation of a specific quantile of a data population characteristic is a routine statistical task. Some commonly selected levels for estimation are the first quartile (25 percent), second quartile (50 percent, median), and the third quartile (75 percent). A named quantile, say 25 percent, has 25 percent of the data distribution ...
-
Developmental toxicity of treated municipal wastewater effluent on the Bombina orientalis (Amphibia: Anura) embryos
Amphibian populations have been decreasing in urban freshwater systems in Korea. To elucidate the biological safety of treated wastewater effluent (TWE) in the Tancheon basin, the capital area of Korea, 7 d exposure Bombina orientalis embryo developmental toxicity assay was examined during breeding season. In March, there were no significant differences in embryonic survival or malformation ...
-
Extensive remediation of superfund site - case study
The 80 acre site, formerly a minerals processing facility, was operated primarily to recover lithium and other rare-earth minerals from ores. Raw ores were imported to the site for processing. During one phase of its operations, the facility also processed uranium ores for the government. The site was listed as by the U.S. Environmental Protection Agency (EPA) as a Comprehensive Environmental ...
-
Radiological safety and environmental monitoring aspects of mining and processing of uranium ore at Jaduguda, India
Low–grade uranium ore is mined and processed in India since the early 1970s. To adhere to the regulatory compliance monitoring of external gamma level, radon and long–lived alpha activity of ore dust is carried out in uranium mines. Apart from this, surface contamination is also monitored in radiologically important areas of ore processing plant. Exposure of occupational workers is evaluated ...
-
Evaluation of atmospheric particle dispersion at a contaminated mine using biomonitors
This study has carried out the assessment of magnitude of toxic elements contamination in and around the Sao Domingos mining area, a copper-sulphide open pit mine, and atmospheric transport of above elements by using lichens and Instrumental Neutron Activation Analysis (INAA). Samples of the epiphytic lichen Evernia prunastri and soils were collected. The concentrations of As, Sb, Fe and Zn were ...
-
Phosphate Mine Tailings - Case Study
THE CHALLENGE A typical phosphate mining operation can produce between 180,000 and 225,000 gallons per minute of fine phosphatic clay tailings. This material has a solids concentration of between 2% and 7% on a dry-solids basis. Currently, ponds and lagoons are used for settling and clarification of these materials. Many of these polishing ponds are approximately 200 to 300 acres in size, and ...
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you