Fachartikel
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Selective Excavation of Spoil Dumps Using Heavy Machinery: Study Based on a Chilean Tailings Impoundment
Mine tailings are often disposed of in slurry dumps. Older facilities of this kind may include relating dams that have been poorly designed and constructed. This can pose a threat to local residents and the environment. Progressive oxidation can result in the dissolution of metals. This may impose an increased…
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A First Step Towards Landfill Mining
The term “urban mining”, which is now a well-known concept, refers to the reclamation of compounds and elements from man-made sources. When buildings are being demolished, e. g., any valuable materials encountered, such as copper pipes and cables or old lead piping, can be extracted separately and the metals reused. Concrete…
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Acoustic Emission Technology and Thermal Imaging for Material Flow Characterization in Mining
Successful process control during the extraction process, as well as the enrichment process of primary raw materials, requires the sensor-based determination of the material composition. Typical technologies, which have been utilized successfully in the mining industry, make use of the electromagnetic spectrum, e. g. XRF, LIBS, NIR, etc. These technologies are…
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Impacts and Implications of Hydraulic Fluids for the Total Cost of Ownership (TCO) of Mining Equipment
According to a recent industry survey, only 25 % of mining companies believe that cost savings of more than 10 % can be achieved with the right choice of hydraulic oil. 43 % of the surveyed companies even question if the use of high-quality lubricating oil can lead to cost savings at all.…
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Ways of Enhancing Endurance of Fastening for Cutting Bits of Coal Mining Machines
This article presents the outcomes of a research project to determine the mechanisms of loads imposed on fasteners of cutting bits as well as the resulting wear. Reasons have been identified for the deterioration of the cutting steel under static loads during different cutting profiles. In this context research has…
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Underground “Green” Mining of Dimension Stone – Limestone in Slovenia
In total eleven dimension stone – limestone quarries in Slovenia, underground mining is carried out today in five quarries, Hotavlje I quarry, Lipica I quarry, Lipica II quarry, Doline quarry, and Debela griža quarry. In all five quarries the reason was primarily the geological structure of the site, the quarry’s condition,…
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Export Finance in the Mining Industry
This article deals with export finance for the mining industry. Although the issue has already entered the industry, the hurdles for small to medium-sized enterprises seem to be too large to make a full use of export finance. For this reason, the following article is addressed to exporters who have…
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Is Your Company Fit for an Ageing Workforce?
By 2030, workers aged 55 to 64 are expected to make up 30 % or more of the workforce in many European countries. The retirement age is increasing in many member states and many workers are likely to face longer working lives. Efforts must therefore be made to ensure safe and…
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Mine Ventilation in the 21st Century – Development Towards Adaptive Ventilation Systems
Mine ventilation and climatization became increasingly important over the last decade. Main challenges and drivers have been the development of mining activities towards greater depths, more complex deposits with a larger areal extent, the further introduction and implementation of diesel-powered vehicles as well as stricter occupational exposure limits and rising…
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Ventilation on Demand
As mining activities advanced throughout the centuries, mines increased in depth and complexity, resulting in the development of new technologies and processes. Ventilation was not only affected in terms of increased air quantities to be supplied, but controlling the airflow also gained attention. Until today, these trends are ongoing, meaning…
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