Open Access. Powered by Scholars. Published by Universities.®

Mining Engineering Commons

Open Access. Powered by Scholars. Published by Universities.®

Articles 1 - 10 of 10

Full-Text Articles in Mining Engineering

Time-Dependent Deformation And Associated Failure Of Roof In Underground Mines, Yuting Xue Jan 2019

Time-Dependent Deformation And Associated Failure Of Roof In Underground Mines, Yuting Xue

Graduate Theses, Dissertations, and Problem Reports

In underground coal mines, roof falls are a major contributor to injuries and fatalities. Studies have related the occurrence of roof fall to weak immediate roof, high horizontal stress, entry orientation, etc. An often-neglected factor in studies on this topic has been the influence of time-dependent behavior of the roof rock on roof falls. The time-dependent roof failure activity involves both intact and failed rocks. Numerical simulation techniques are available that include time-dependent behavior; however, they lack constitutive models that consider both the intact and the failed behavior of rock. In addition, input properties for the creep models only include ...


Parametric Study Of Coal Liberation Behavior Using Silica Grinding Media, Adewale Wasiu Adeniji Jan 2018

Parametric Study Of Coal Liberation Behavior Using Silica Grinding Media, Adewale Wasiu Adeniji

Graduate Theses, Dissertations, and Problem Reports

This study evaluates the coal liberation behavior using silica as the grinding media by assessing the effects of four operating factors including nominal feed size, media size, shaft speed and grinding time, each of three levels on two response variables, the product P80 and the specific energy. The coal material used in this study was mixed-phase particles commonly referred to as middlings, sampled from dense medium circuit at the Leatherwood preparation plant in Kentucky. One-third fractional factorial design of resolution III was implemented. Since silica was obtained in three standard size ranges as per manufacturer’s design, media size ...


Free Markets, Individual Liberties And Safe Coal Mines: A Post-Sago Perspective, C. Gregory Ruffennach Sep 2008

Free Markets, Individual Liberties And Safe Coal Mines: A Post-Sago Perspective, C. Gregory Ruffennach

West Virginia Law Review

No abstract provided.


Let's Not Abandon What Works, Edward Chair Sep 2008

Let's Not Abandon What Works, Edward Chair

West Virginia Law Review

No abstract provided.


The Failed Promise Of Workplace Health Regulation, David C. Vladeck Sep 2008

The Failed Promise Of Workplace Health Regulation, David C. Vladeck

West Virginia Law Review

No abstract provided.


Mining Mining Data: Bringing Empirical Analysis To Bear On The Regulation Of Safety And Health In U.S. Mining, Alison D. Morantz Sep 2008

Mining Mining Data: Bringing Empirical Analysis To Bear On The Regulation Of Safety And Health In U.S. Mining, Alison D. Morantz

West Virginia Law Review

No abstract provided.


Workers At Risk: The Unfulfilled Promise Of The Occupational Safety And Health Act, Lynn Rhinehart Sep 2008

Workers At Risk: The Unfulfilled Promise Of The Occupational Safety And Health Act, Lynn Rhinehart

West Virginia Law Review

No abstract provided.


Integrating Technology To Improve Mine Safety In The Wake Of Recent Mine Disasters, Jeffery L. Kohler Sep 2008

Integrating Technology To Improve Mine Safety In The Wake Of Recent Mine Disasters, Jeffery L. Kohler

West Virginia Law Review

No abstract provided.


Dedication, Joyce E. Mcconnell Sep 2008

Dedication, Joyce E. Mcconnell

West Virginia Law Review

No abstract provided.


Approaching Coal Mine Safety From A Comparative Law And Interdisciplinary Perspective, Anne Marie Lofaso Sep 2008

Approaching Coal Mine Safety From A Comparative Law And Interdisciplinary Perspective, Anne Marie Lofaso

West Virginia Law Review

No abstract provided.