core drilling Articles
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Lead didn’t bring down ancient Rome, But it’s still a modern menace
Lead in Ancient Rome’s Water Was 100 Times More Than Natural Level A scientist-led investigation in Rome has shown lead levels in water were at a considerably higher level than natural levels. The scientists believe that the high levels were around 100 times higher than what they should have been, however luckily not high enough to cause any substantial damage. Water was brought into ...
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Geo Drilling International: Hands-On
Boart Longyear has launched a core-orientation system made for drillers, by drillers Although critical for mapping exploration and minesite development, core orientation is part of the drilling process that has experienced only incremental product improvements through small changes to the process and equipment. Boart Longyear has now introduced TruCore, a first-inindustry integrated ...
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GPR: a new tool for structural health monitoring of infrastructure
Abstract Recent developments in acquisition methodology, data acquisition systems, post-processing software, and the availability of user friendly high-frequency antennas have enabled the GPR user to generate accurate three dimensional images of the interior of concrete structures. Four case studies are discussed with emphasis on output that is readily understood by the non-specialist engineer. ...
By SewerVUE
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Case Study - Mapping Gold Deposits with Induced Polarization Surveys, Yukon, Canada
Site: Rockhaven Resources Ltd. Klaza property in Yukon Territory, Canada Equipment: SuperStingR8 with AGI 84 electrode passive electrical imaging cable, 5 meter electrode spacing, inverse schlumberger array, boost mode(200W output), Direct Samples: Reverse circulation drilling and geochemical analysis of core samples. Results: SuperStingR8 induced polarization data were successfully used ...
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Deployment of a Deep Borehole Observatory at the High Lake Project Site, Nunavut, Canada
Abstract We deployed a deep permafrost observatory in a borehole at the High Lake Project Site (67°22'N, 1I0°50>W), Nunavut, Canada with the aims of (1) investigating the physical and chemical limitations on microbial life within such environments, (2) developing life-detecting technologies for the exploration of life on Mars and (3) constraining the hydrological and thermal parameters ...
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Understanding Sonic drilling
What is sonic drilling? Sonic drilling is a technique that significantly reduces friction on the drill string and drill bit by using energy resonance to affect the soil structure where it contacts the drill string. This combination makes penetrating for a large range of soils much easier. Sonic drilling is most often used when the drilling is difficult and the integrity of the core sample is ...
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Paleoclimatology: Examples of Ecological Impacts from Prehistoric Climate Change
Introduction Climate change is a pressing issue that has received a lot of attention from the media, our political leaders, and research institutions. Much research is produced on the environmental, ecological, and societal impacts of global warming. Discussions about climate change often focus on mitigation and adaptation to future climate scenarios. The purpose of this article is to shed ...
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Update on the geophysical expression of the Abra sedimentary replacement Pb-Ag-Cu-Au deposit, Western Australia
Summary The Abra sedimentary replacement Pb-Ag-Cu-Au deposit is located in the Paleoproterozoic Edmund Basin, 900km NNE of Perth. Mineralisation at Abra has no surface expression and the deposit was discovered in 1981 by drill testing coincident magnetic and gravity anomaly highs. The deposit is hosted within siliciclastic and carbonate deposits of the Edmund Group and consists of a stratabound ...
By MoHo s.r.l.
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Exploration/Mining - Case Study
The overflow of the settling tank is pumped to Sofi Filter via a centrifugal pump. Due to the filter's cross-flow design, part of the feed flows through the filter element and part returns to the process. In this application Sofi Filter is equipped with a 10 um metal wire mesh element. The filtrate from Sofi Filter can be drained or reused. Sofi Filter reduces the amount of water in the settling ...
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Understanding Sonic drilling
What is sonic drilling? Sonic drilling is a technique that significantly reduces friction on the drill string and drill bit by using energy resonance to affect the soil structure where it contacts the drill string. This combination makes penetrating for a large range of soils much easier. Sonic drilling is most often used when the drilling is difficult and the integrity of the core sample is ...
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Fold geometry model of Coyote hills segment of Puente hills blind-thrust system applied to interpretation of long-term water level data
Recent work by others along the Coyote Hills segment of the Puente Hills blind-thrust system has imaged the near-surface structural features generated by activity of that intrabasin fault. Published shallow seismic profiles near the south flank of the Coyote Hills indicate the blindthrust system is expressed by south-facing folding of Quaternary terrestrial sediments underlying the hills. ...
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Drilling down into chemical hazards in the mining industry
Industries worldwide rely on the steady supply of minerals and metals harvested by the mining industry such as coal, iron ore, bauxite, and potash. Though the final products of mining may not be hazardous, there are many chemical risks that mine workers are exposed to daily. Mineral production involves a series of physical and chemical processes. These occur throughout the excavation of ore ...
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Multilevel Groundwater Assessment of Confining Unit in a Bedrock Sequence near Sarnia, Ontario
Untitled Document INTRODUCTION Two sites in southern Ontario were studied through instrumentation of boreholes with Waterloo Multilevel Monitoring Systems. These sites are located approximately 7 km (4.3 miles) apart and lie between Sarnia to the northwest, and Petrolia to the east in lambton County, Ontario, Canada (figure 1). Multilevel monitoring devices were installed to ...
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Assessing the transport and fate of MTBE
Untitled Document Abstract The ether oxygenates MTBE and TAME have been used in petroleum fuel formulations in the UK since the mid-1980s and have led to contamination of major aquifers with these chemicals, including the Chalk aquifer of southern England. An assessment is made of the controls on the fate of MTBE and BTEX compounds at a contaminated site on the Chalk aquifer, ...
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