The Navajo Nation is located on the Colorado Plateau and encompasses over 25,000 square miles across Arizona, New Mexico, and Utah. The distinctive physiography of this region has resulted in a major mining area for uranium. The Navajo Nation includes intensely dissected rocky regions and has elevations that range from about 3,000 feet to slightly over 10,000 feet. The region is known for a wid...

The impact of discharges from abandoned metal and ironstone mines has been a much studied form of aquatic pollution in recent decades. Few attempts however, have been made to accurately determine the overall contaminant mass flux arising from abandoned mine sites at scales above catchment level. Such assessments are critical to determine the significance of former mining to national, regional a...

Concentrations and loads of total mercury and methylmercury were measured in streams draining abandoned mercury mines and in the proximity of geothermal discharge in the Cache Creek watershed of California during a 17-month period from January 2000 through May 2001. Rainfall and runoff were lower than long-term averages during the study period. The greatest loading of mercury and methylmercury ...

The presence of ground subsidence near abandoned coal mine areas can be hazardous to people and property because of its tendency to happen without warning. The prognostication has recently become a serious social problem in Korea, since almost all underground coal mines have been abandoned, and few remain since 1989. However, the effort of scientifically assessment of susceptible ground subside...

Research suggests that there are potentially millions of abandoned mines around the globe. As such, it is highly probable these operations have potential resulting in a magnitude social and environmental issues. However, limited literature on their impacts specifically to local community. To explore this issue, we investigated four case studies through review using wide range white, grey peer-r...

Abandoned mines offer important roosting habitat for several species of bats throughout the western United States. Currently, abandoned mine reclamation programs are tasked with closing to ameliorate safety, health, and environmental hazards found in around these sites. Without appropriate pre-closure evaluations determine use workings prior closure, that depend on may be negatively impacted. T...