Exploration of petrographic,elemental,and material properties of dynamic failure-prone coals

The purpose of this study is to explore how the geochemical and petrographic components of coal may impact its physical properties and how these correlate with a history of reportable dynamic failure in coal mines.Dynamic failure events,also termed bumps,bounces,or bursts,are the explosive failures of rock in a mining environment.These events occur suddenly and often with no warning,resulting in worker injury up to and including fatality in greater than 60%of reportable cases through the Mine Safety and Health Administration(MSHA).A database of variables was compiled using publicly available datasets,which includes compositional geographic,strength,and Hardgrove grindability index(HGI)data.Results indicated that bumping coals were less mature,lower in carbon,higher in oxygen,softer,and less well cleated than coals that did not bump.High liptinite content was found to correlate with higher average uniaxial compressive strength(UCS)values.However,no clear and direct correlation between UCS and dynamic failure status was observed.The findings of this study established that differences existed between coals that had versus had not experienced reportable dynamic failure accidents.These differences were inherent to the coal itself and were independent of mining-induced risk factors.Results further illuminated how compositional attribute of coal influenced physical properties and began to clarify potential links between geochemistry and dynamic failure status.Only through the better understanding of risk can more effective mitigating strategies be enacted.

Guest editorial–special issue on ground control in mining in 2020

Ground control is the science of studying and controlling the behavior of rock strata in response to mining operations.Ground-control-related research has seen significant advancements over the last 40 years,and these accomplishments are well documented in the proceedings of the annual International Conference on Ground Control in Mining(ICGCM)[1].The ICGCM is a forum to promote closer communication among researchers,consultants,regulators,manufacturers,and mine operators to expedite solutions to ground control problems in mining[2–7].Fundamental research and advancements in ground control science define the central core of the conference mission.Providing information to mine operators is a priority,as the conference goal is to offer solutions-oriented information.In addition,the conference has included innovative technologies and ideas in miningrelated fields such as exploration,geology,and surface and underground mining in all commodities.Many new ground control technologies and design standards adopted by the mining industry were first discussed at ICGCM.This conference is recognized as the leading international forum for introducing new ground-control-related research and products.

Guest editorial-special issue on ground control in mining in 2018

Ground control is the science of studying and controlling the behavior of rock strata in response to mining operations. Ground control-related research has seen significant advancements over the last 37 years, and these accomplishments are well documented in the proceedings of the annual International Conference on Ground Control in Mining (ICGCM)(1)The ICGCM is a forum to promote closer communication among researchers, consultants。

Guest editorial–Special issue on ground control in mining in 2017

Ground control is the science of studying and controlling the behavior of rock strata in response to mining operations.Ground control-related research has seen significant advancements over the last 36 years,and these accomplishments are well documented in the proceedings of the annual International Conference on Ground Control in Mining(ICGCM)[1].The ICGCM is a forum to promote closer communication among researchers,consultants,regulators,manufacturers,and mine operators to expedite solutions to ground control problems in mining[2–8].Fundamental research and advancements in ground control science define the central core of the conference mission.Providing information to mine operators is a priority,as the conference goal is to offer solution-oriented information.In addition,the conference has included innovative technologies and ideas in mining-related fields such as exploration,geology,and surface and underground mining.Many new ground control technologies and design standards adopted by the mining industry were first discussed at ICGCM.Therefore,this conference is recognized as the best forum for introducing new ground control-related research and products.

Guest editorial-special issue on ground control in mining in 2019

Ground control is the science of studying and controlling the behavior of rock strata in response to mining operations.Ground-control-related research has seen significant advancements over the last 39 years,and these accomplishments are well documented in the proceedings of the annual International Conference on Ground Control in Mining(ICGCM)[1].The ICGCM is a forum to promote closer communication among researchers,consultants,regulators,manufacturers,and mine operators to expedite solutions to ground control problems in mining[2–7].Fundamental research and advancements in ground control science define the central core of the conference mission.Providing information to mine operators is a priority,as the conference goal is to offer solutions-oriented information.In addition,the conference has included innovative technologies and ideas in miningrelated fields such as exploration,geology,and surface and underground mining in all commodities.Many new ground control technologies and design standards adopted by the mining industry were first discussed at ICGCM.Therefore,this conference is recognized as the best international forum for introducing new groundcontrol-related research and products.

Prevalence of intestinal schistosomiasis in pre-school aged children: a pilot survey in Marolambo District, Madagascar

School-aged children(SAC)have a considerable burden of intestinal schistosomiasis in Madagascar yet its burden in pre-school aged children(PSAC)is currently overlooked.To assess the at-risk status of PSAC,we undertook a pilot epidemiological survey in June 2019 examining children(n=89),aged 2-4-years of balanced gender,in six remote villages in Marolambo District,Madagascar.Diagnosis included use of urine-circulating cathodic antigen(CCA)dipsticks and coproscopy of stool with duplicate Kato-Katz(K-K)thick smears.