Magnetometry as a Tool to Map Subsurface Conditions in an Abandoned Iron Ore Mining District in New Jersey

Cohen, K. K.; Moebs, N.N.; Trevits, Michael A.

doi:10.4133/1.2921970

Cited by 2 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Metal mine workings determine anomalies due to the presence or absence of (Cohen et al 1992); fires, magnetic material in the subsurface.…”

Section: Measures Perturbations In the Earth's Magnetic Field Tomentioning

confidence: 99%

Geophysical Methods: Remote Techniques Applied to Mining-Related Environmental and Engineering Problems

Ackman¹,

Cohen²

1994

ASMR

Self Cite

View full text Add to dashboard Cite

Acid mine drainage (AMD) and subsidence are two of the serious environmental and engineering problems associated with active, abandoned, and recently active mine lands. Geophysical methods are available to simply and inexpensively determine the location and extent of the problem area, to monitor the progress of remediation work, and to assess the long-term impact of mining-related environmental and engineering problems. Various techniques can be used to locate hydrologic flows through buried spoil, to study combustion areas in coal waste bank fires, and to detect the subsurface conditions that lead to the occurrence of mine subsidence. The utility of two of these geophysical tools has been demonstrated in specific case studies: the use of terrain conductivity to facilitate stream sealing and the application of seismic techniques to characterize longwall mine overburden conditions. Other geophysical methods are discussed in terms of their potential application to mining-related problems.

show abstract

“…Metal mine workings determine anomalies due to the presence or absence of (Cohen et al 1992); fires, magnetic material in the subsurface.…”

Section: Measures Perturbations In the Earth's Magnetic Field Tomentioning

confidence: 99%

Geophysical Methods: Remote Techniques Applied to Mining-Related Environmental and Engineering Problems

Ackman¹,

Cohen²

1994

ASMR

Self Cite

View full text Add to dashboard Cite

show abstract

“…U.S. Bureau of Mines researchers used magnetometry as a tool to aid in delineating the areal extent of the underground workings (Cohen et al 1992). This tool was chosen because the ore has an extremely high magnetic susceptibility, a physical property that determines a material's ability to become magnetized.…”

Section: Abandoned Iron Ore Minementioning

confidence: 99%

“…A wide spectrum of abandoned mine land subsidence research has been conducted to date, and has been directed by Federal, State, and other organizations. This research has focused on such topics as developing subsidence prediction technology (ICF Technology Inc./SR W 1992, Bauer et al 1991, Walker and Trevits 1990, Munson 1987, underground mine delineation and void detection (Cohen et al 1992, Friedel et al 1990, Branham and Steeples 1988, and remediation (Dyni 1993, Burnett et al 1993). These research topics address issues of subsidence risk assessment, prediction, prevention, and remediation.…”

Section: Introductionmentioning

confidence: 99%

Resolving Abandoned Mine Conditions Susceptible to Surface Subsidence

Cohen¹,

Trevits²

1994

ASMR

Self Cite

View full text Add to dashboard Cite

Surface subsidence attributable to abandoned underground mines ranks high among abandoned mine land issues. Resolving the conditions that lead to unplanned mine subsidence remains a problem to geotechnical personnel charged with such tasks. A poor understanding of the conditions that lead to subsidence and geotechnical tools with limited subsurface resolving power compound the problem of determining abandoned mine land susceptible to subsidence. Drilling on closely spaced centers is a standard approach to characterizing an area of investigation. Alternative technologies that augment standard procedures have been tested to a limited extent, and are investigated here. Two case studies that represent different stages of subsidence assessment are presented, including an abandoned iron ore mine site in New Jersey investigated with magnetometry and an abandoned anthracite coal mine site in Pennsylvania investigated with seismic techniques. Results from the two case studies demonstrated that the alternative technologies of magnetometry and seismic techniques were valuable in assessing the extent of mining and in identifying different physical conditions within the mine level and overburden. A review of these and other subsidence investigations identified the following tasks as useful in assessing abandoned mine properties: (1) delineating the areal extent of mining, (2) developing models for mine and overburden conditions, (3) conducting field studies with appropriate alternative technologies to target instability zones, and (4) if warranted, implementing a program to monitor mine overburden stability through time. Alternative technologies identified to augment standard drilling practices include geophysical techniques, remote sensing, geochemical surveys, and displacement sensors.

show abstract

Magnetometry as a Tool to Map Subsurface Conditions in an Abandoned Iron Ore Mining District in New Jersey

Cited by 2 publications

References 0 publications

Geophysical Methods: Remote Techniques Applied to Mining-Related Environmental and Engineering Problems

Geophysical Methods: Remote Techniques Applied to Mining-Related Environmental and Engineering Problems

Resolving Abandoned Mine Conditions Susceptible to Surface Subsidence

Contact Info

Product

Resources

About