scholarly journals Regional baseline geochemistry and environmental effects of gold placer mining operations on the Fortymile River, eastern Alaska

1999 ◽  
Author(s):  
R.B. Wanty ◽  
Bronwen Wang ◽  
Jim Vohden ◽  
Paul H. Briggs ◽  
A.H. Meier
Keyword(s):  
Environmental Effects ◽  
Gold Placer ◽  
Mining Operations ◽  
Regional Baseline

Are miners the bunnies or the bilbies of the rangelands?

2003 ◽  
Vol 25 (2) ◽  
pp. 172 ◽  
Author(s):  
J. L. Read
Keyword(s):  
Environmental Effects ◽  
South Australia ◽  
Economic Benefits ◽  
Environmental Research ◽  
Relative Area ◽  
Environmental Implications ◽  
Mining Operations ◽  
Consistent Treatment ◽  
Regional Conservation ◽  
Olympic Dam

In order to be preferred land-users of the Australian rangelands, mining operations should legacy net environmental, social and economic benefits in the regions that they operate. The positive and negative environmental implications of the Olympic Dam mine in arid South Australia are compared in this study. Criteria assessed include the relative area of affected v. improved landscape, environmental research, pest control and the facilitation of proactive conservation and sustainable diversification outcomes. A call is made for consistent treatment of potential environmental impacts across all rangeland users and the adoption of biodiversity trading to improve regional conservation outcomes. A challenge is issued to miners and other rangeland land-users to demonstrate that, like bilbies, their net environmental effects are beneficial.

scholarly journals Assessment of Environmental Impacts of Quarry Operation in Ogun State, Nigeria

2017 ◽  
Vol 2 (2) ◽  
Author(s):  
Mbuyi M Melodi
Keyword(s):  
Air Pollution ◽  
Environmental Impacts ◽  
Environmental Effects ◽  
Land Degradation ◽  
Surface Mining ◽  
Noise Pollution ◽  
Host Community ◽  
Mining Activities ◽  
Mining Operations ◽  
Ogun State

The study investigated the environmental effects of quarry operations in Abeokuta, Ogun state, while it specifically sought to identify corresponding environmental impacts posed in quarry operation and, assess the efforts towards minimizing environmental impacts of their operations. Primary data used for this study was obtained from 100 residents of the community and staffs of the company, randomly chosen and administered with structured questionnaires. Ninety one percent of the respondents noted that environmental problems like land degradation and pollution (including air, water and noise pollution) are associated with mining activities in their respective communities. Air pollution and noise pollution were found to have significant (p < 0.05). Long period (58.0%) of surface mining (71.7%) is prominent in the study area, while it posed some hazards to residents in the study area (84.0%). This includes (degradation of land and vegetation (72.0%), water pollution (44.0%), air pollution (44.0%) and noise pollution (56.0%). Noise and air pollution and governmental intervention in environmental degradation of Mining were found to have significant (p < 0.05) impact on host community as identified by staff of mine and residents. Efforts towards minimizing environmental impacts of quarrying include resettlement and compensation of affected communities (20%). Environmental effects such as land degradation and pollution of various forms (air, ground vibration and noise) in the surrounding communities where the mining activities (quarry operations) are carried out are associated with surface mining activities. It is therefore recommended that government agencies overseeing mining operations revise environmental management policy to ensure that the environmental effects of mining activities are reduced to the barest minimum.

Imaging molecules adsorbed onto electrodes under potential control by scanning probe microscopy

1991 ◽  
Vol 49 ◽  
pp. 376-377 ◽  
Author(s):  
N.J. Tao ◽  
J.A. DeRose ◽  
P.I. Oden ◽  
S.M. Lindsay
Keyword(s):  
Surface Charge ◽  
Environmental Effects ◽  
Scanning Probe Microscopy ◽  
Statistical Significance ◽  
Electrochemical Methods ◽  
Surface Structures ◽  
Scanning Probe ◽  
Potential Control ◽  
Afm Imaging ◽  
Special Circumstances

Clemmer and Beebe have pointed out that surface structures on graphite substrates can be misinterpreted as biopolymer images in STM experiments. We have been using electrochemical methods to react DNA fragments onto gold electrodes for STM and AFM imaging. The adsorbates produced in this way are only homogeneous in special circumstances. Searching an inhomogeneous substrate for ‘desired’ images limits the value of the data. Here, we report on a reversible method for imaging adsorbates. The molecules can be lifted onto and off the substrate during imaging. This leaves no doubt about the validity or statistical significance of the images. Furthermore, environmental effects (such as changes in electrolyte or surface charge) can be investigated easily.

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