Search for dissertations about: "small scale mining"
Showing result 1 - 5 of 31 swedish dissertations containing the words small scale mining.
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1. Effects of confinement and initiation delay on fragmentation and waste rock compaction : Results from small scale tests
Abstract : Sub-level caving (SLC) is classified as a mass mining method and there is an increasing interest in its application worldwide and in a very wide range of geotechnical environments. Design of sub-level blasting rounds and optimization has become more important now when the sizes of the blasting rings have become larger. READ MORE
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2. Small town, big move : Constructions of place in transiting mining communities
Abstract : The dissertation accounts for construction of place in mining communities as they undergo a major urban transformation. In the 2010s, urban centres in the northern Sweden mining communities of Gällivare and Kiruna entered a new execution phase of a large-scale transformation precipitated by ground subsidence caused by mining activities, a transformation that continues. READ MORE
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3. Mining induced seismicity in Sweden
Abstract : The virgin stress state in the rock mass is disturbed by mining, which leads to locally increased or decreased stresses. The rock mass in Sweden is generally composed of high strength brittle rock types, so the risk of seismicity and rockbursts (violent failures) increase with increasing depth of mining due to increasing stress levels. READ MORE
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4. Fragmentation and waste rock compaction in small-scale confined blasting
Abstract : Sub-level caving (SLC) is an important mass mining method, used at LKAB e.g. The caved rock or debris at the SLC interface reduces the fragmentation and the swelling of the blasted ring and it dissipates the explosive energy. These phenomena may immobilize the blasted ring, causing ore losses. READ MORE
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5. Waterborne pollution from mining in cold climates : Potential catchment-scale immobilization of substances by microbial sulfate reduction (MSR)
Abstract : Waterborne pollution from mining is impacting groundwater and surface water resources in many regions of the world. Main problems include acidification and high levels of dissolved toxic metals that adversely affect humans and ecosystems. READ MORE