scholarly journals Naturally Occurring Asbestos in Argentina: A Compilation of Case Studies

2018 ◽  
pp. 169-174
Author(s):  
Lescano Leticia ◽  
Locati Francisco ◽  
Marfil Silvina ◽  
Sfragulla Jorge ◽  
Bonalumi Aldo ◽  
...  
Keyword(s):  
Case Studies ◽  
Naturally Occurring ◽  
Naturally Occurring Asbestos

Impacts of land use on spatial distribution of mortality rates of cancers caused by naturally occurring asbestos

2012 ◽  
Vol 22 (5) ◽  
pp. 516-521 ◽  
Author(s):  
Binggan Wei ◽  
Xianjie Jia ◽  
Bixiong Ye ◽  
Jiangping Yu ◽  
Biao Zhang ◽  
...  
Keyword(s):  
Land Use ◽  
Spatial Distribution ◽  
Mortality Rates ◽  
Naturally Occurring ◽  
Naturally Occurring Asbestos

scholarly journals Impact of Naturally Occurring Asbestos on Asbestos Ban: Regulations and Experience of the Republic of Korea

2022 ◽  
Vol 19 (2) ◽  
pp. 742
Author(s):  
Jiwoon Kwon
Keyword(s):  
Preventive Measures ◽  
Control Measures ◽  
Exposure Risk ◽  
Close Collaboration ◽  
Mineral Particles ◽  
Naturally Occurring ◽  
Transmission Electron ◽  
The Future ◽  
Naturally Occurring Asbestos ◽  
The Republic

This review examined the main issues debated in Korea regarding the production and use of materials containing naturally occurring asbestos (NOA) as impurities, and investigated the impacts of these debates on the asbestos ban, as well as the future implications. In Korea, incidents associated with the production and use of NOA-contaminated talc powders, construction rocks, serpentinites, and dolomite rocks raised public concern and led to accelerating the ban on asbestos. The main controversies concern policies on appropriate asbestos content limits, whether materials containing a trace amount of NOA should be banned, and the control of materials with high human exposure risk. To address recurring controversies, the implementation of preventive measures to manage elongated mineral particles and the use of transmission electron microscopy for more sensitive analysis need to be discussed, along with reaching social agreement on the controversial policies. To minimize the potential exposure to asbestos that may occur during the production and use of industrial minerals in the future, it is necessary to apply occupational exposure control measures and monitor the health effects of the relevant population groups. These national policies on NOA should be prepared based on close collaboration and discussion with policymakers, industry stakeholders, and related academic experts.

A Study of Asbestos Characteristics and Correlation of Environmental Factors in Naturally Occurring Asbestos Areas

2015 ◽  
Vol 22 (5) ◽  
pp. 639 ◽  
Author(s):  
Joon-sig Jung ◽  
Hyun-sung Jung ◽  
Ju-yeong Lee ◽  
Woo-seok Lee ◽  
Oh-sang Kwon ◽  
...  
Keyword(s):  
Environmental Factors ◽  
Naturally Occurring ◽  
Naturally Occurring Asbestos

Overview of Naturally Occurring Asbestos in California and Southwestern Nevada

2020 ◽  
Vol 26 (1) ◽  
pp. 9-14
Author(s):  
R. Mark Bailey
Keyword(s):  
Sierra Nevada ◽  
North American ◽  
Volcanic Belt ◽  
Island Arc ◽  
North American Plate ◽  
Mountain Range ◽  
The North ◽  
Rock Types ◽  
Naturally Occurring ◽  
Naturally Occurring Asbestos

ABSTRACT Naturally occurring asbestos (NOA) is being discovered in a widening array of geologic environments. The complex geology of the state of California is an excellent example of the variety of geologic environments and rock types that contain NOA. Notably, the majority of California rocks were emplaced during a continental collision of eastward-subducting oceanic and island arc terranes (Pacific and Farallon plates) with the westward continental margin of the North American plate between 65 and 150 MY BP. This collision and accompanying accretion of oceanic and island arc material from the Pacific plate onto the North American plate, as well as the thermal events caused by emplacement of the large volcanic belt that became today's Sierra Nevada mountain range, are the principal processes that produced the rocks where the majority of NOA-bearing units have been identified.

Naturally occurring asbestos in an alpine ophiolitic complex (northern Corsica, France)

2019 ◽  
Vol 78 (17) ◽  
Author(s):  
Didier Lahondère ◽  
Florence Cagnard ◽  
Guillaume Wille ◽  
Jéromine Duron
Keyword(s):  
Naturally Occurring ◽  
Naturally Occurring Asbestos ◽  
Ophiolitic Complex

Case Studies of Wetland Filtration of Mine Waste Water in Constructed and Naturally Occurring Systems in Northern Australia

1994 ◽  
Vol 29 (4) ◽  
pp. 257-265 ◽  
Author(s):  
B. N. Noller ◽  
P. H. Woods ◽  
B. J. Ross
Keyword(s):  
Waste Water ◽  
Case Studies ◽  
Mine Waste ◽  
Waste Rock ◽  
Typha Domingensis ◽  
Gold Mine ◽  
Northern Australia ◽  
Runoff Water ◽  
Naturally Occurring ◽  
Mine Sites

A problem common to mines operating in the tropics is the disposal of water, which may be alkaline, acidic, or contain toxic elements such as arsenic or cadmium. The availability of year-round water supply at many mine sites in Northern Australia, particularly from pit dewatering, together with the monsoonal climate, provide appropriate conditions for the formation of natural wetlands or establishment of artificial wetlands. Wetland species (particularly Typha spp.) flourish in the presence of flowing or shallow water from dewatering, and data collected from natural and experimental wetlands show reduction of metal concentrations by wetland filtration of mine waste water. The following case studies are considered:Constructed wetlands, used to remove uranium from waste rock runoff before release to an adjacent creek provide a means of “polishing” runoff water prior to discharge to the creek.Creek-Billabong systems with existing wetlands adjacent to mine sites adventitiously “filter” waters discharged from mine sites. Trace elements in dewatering water from a gold mine discharged into an oxbow show reduction of elemental concentrations downstream, compared to discharge water.Naturally generated wetlands at several Northern Territory mines have developed along channels for discharge of pit water, with ingress of Typha domingensis. Such wetlands, associated with dewatering, have been examined at four mines, some with acid mine drainage. Water quality measured after wetland treatments shows reductions in concentrations of various heavy metals and sulfate. Volunteer Typha domingensis grows and spreads in shallow flowing channels, providing an inherent “filtration” of the water.Natural swamplands are incorporated in the waste rock runoff management design of a new gold mine, to reduce potentially high arsenic levels in the waste water. Constructed and naturally occurring wetlands may be used in the treatment of most mine waste waters to achieve levels of constituents acceptable for discharge to the surrounding environment.

Does Exposure to Naturally Occurring Asbestos (NOA) During Dam Construction Increase Mesothelioma Risk?

2020 ◽  
Vol 26 (1) ◽  
pp. 29-33
Author(s):  
Daniel W. Hernandez
Keyword(s):  
Construction Project ◽  
Current Understanding ◽  
Dam Construction ◽  
Mining Operations ◽  
Protective Measures ◽  
Mineral Fibers ◽  
Mineral Particles ◽  
Naturally Occurring ◽  
Naturally Occurring Asbestos ◽  
Compare And Contrast

ABSTRACT The Calaveras Dam Replacement Project, a major construction project completed in 2019, involved hundreds of workers using heavy earth-moving equipment and mining operations, including blasting, drilling, rock crushing, and other operations designed to move millions of cubic yards of earth. Much of the material was composed of serpentinite, blueschist, and other rocks that contain chrysotile and a variety of amphibole minerals, including glaucophane, winchite, actinolite, tremolite, and other asbestos-related amphiboles. This article explores the unique characteristics of the blueschist that required extensive protective measures to be undertaken by the contractor to protect workers and surrounding sensitive receptors. This article will provide an overall summary of the dimensional characteristics of the airborne blueschist elongate mineral particles encountered during construction activities to compare and contrast current understanding of cleavage fragments versus asbestiform mineral fibers.

Environmental contamination by naturally occurring asbestos (NOA): Analysis of sentinel animal lung tissue

2020 ◽  
Vol 745 ◽  
pp. 140990
Author(s):  
Antonella Campopiano ◽  
Annapaola Cannizzaro ◽  
Angelo Olori ◽  
Federica Angelosanto ◽  
Maria Rosaria Bruno ◽  
...  
Keyword(s):  
Lung Tissue ◽  
Environmental Contamination ◽  
Naturally Occurring ◽  
Naturally Occurring Asbestos ◽  
Sentinel Animal
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