نتایج جستجو برای: abandoned mines

تعداد نتایج: 16266  

Journal: :international journal of environmental research 2015
s.e. mhlongo f. amponsah-dacosta

abandoned surface mine excavations can be a major environmental, social and/or human healthproblem for the mining industry as well as for the community living nearby. this problem is exacerbated by therapidly growing population encroaching on areas of historic mined lands. the aim of this studywas to assess thesafety status of the historic nyala mine excavation with the purpose of coming up wit...

2011
MARK A. HAYES

In western United States, both mine reclamations and renewed mining at previously abandoned mines have increased substantially in the last decade. This increased activity may adversely impact bats that use these mines for roosting. Townsend’s big-eared bat (Corynorhinus townsendii) is a species of conservation concern that may be impacted by ongoing mine reclamation and renewedmineral extractio...

2003
David I. Ferguson Aaron Morris Dirk Hähnel Christopher R. Baker Zachary Omohundro Carlos F. Reverte Scott Thayer Charles Whittaker William Whittaker Wolfram Burgard Sebastian Thrun

We present the software architecture of a robotic system for mapping abandoned mines. The software is capable of acquiring consistent 2D maps of large mines with many cycles, represented as Markov random fields. 3D C-space maps are acquired from local 3D range scans, which are used to identify navigable paths using A* search. Our system has been deployed in three abandoned mines, two of which i...

Journal: :Journal of the Air & Waste Management Association 2000
D A Kirchgessner S D Piccot S S Masemore

Past efforts to estimate methane emissions from underground mines, surface mines, and other coal mine operations have been hampered, to different degrees, by a lack of direct emissions data. Direct measurements have been completely unavailable for several important coal mining operations. A primary goal of this study was to collect new methane emissions measurements and other data for the most ...

2015
Hee-seung Son Soo-geun Kim Byung-seong Suh Dong-uk Park Dae-seon Kim Seung-do Yu Yeong-seoub Hong Jung-duck Park Byung-kook Lee Jai-dong Moon Joon Sakong

OBJECTIVE The aim of this study was to determine the association between urinary cadmium (U-cd) concentration and diabetes in middle-aged Korean residents of abandoned mines using the first Health Effect Surveillance for Residents in Abandoned Metal mines (HESRAM). METHODS This study was cross-sectional study conducted on 719 residents between 40-70 years in 38 abandoned metal mines in Korea....

2016
Jin-Yong Chung Byoung-Gwon Kim Byung-Kook Lee Jai-Dong Moon Joon Sakong Man Joong Jeon Jung-Duck Park Byung-Sun Choi Nam-Soo Kim Seung-Do Yu Jung-Wook Seo Byeong-Jin Ye Hyoun-Ju Lim Young-Seoub Hong

BACKGROUND Arsenic is a carcinogenic heavy metal that has a species-dependent health effects and abandoned metal mines are a source of significant arsenic exposure. Therefore, the aims of this study were to analyze urinary arsenic species and their concentration in residents living near abandoned metal mines and to monitor the environmental health effects of abandoned metal mines in Korea. ME...

2014
Rafael Rodríguez María B. Díaz-Aguado

Flooded mine workings have good potential as low-enthalpy geothermal resources, which could be used for heating and cooling purposes, thus making use of the mines long after mining activity itself ceases. It would be useful to estimate the scale of the geothermal potential represented by abandoned and flooded underground mines in Europe. From a few practical considerations, a procedure has been...

2017
Yang Yu Shen-en Chen Ka-zhong Deng Hong-dong Fan

The collapse of abandoned room-and-pillar mines is often violent and unpredictable. Safety concerns often resulted in mine closures with no post-mining stability evaluations. As a result, large amounts of land resources over room-and-pillar mines are wasted. This paper attempts to establish an understanding of the long-term stability issues of goafs (abandoned mines). Considering progressive pi...

Journal: :Journal of Wildlife Management 2022

Abstract Abandoned mines provide habitat for bats, but their importance to other wildlife is less understood. This descriptive study was designed answer the following questions with an emphasis on carnivores: are species than bats visiting abandoned mines, entering does visitation at differ seasonally, and individual mines? To address these questions, we monitored 50 using remote cameras in nor...

2016
Jinyoung Song Jang-Ho Lee

Recently, the mining industry has introduced renewable energy technologies to resolve power supply problems at mines operating in polar regions or other remote areas, and to foster substitute industries, able to benefit from abandoned sites of exhausted mines. However, little attention has been paid to the potential placement of floating photovoltaic (PV) systems operated on mine pit lakes beca...

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