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Determining an Optimal Shiftwork Duration by Comparative Analysis of Active and Inactive Hours in Underground Mining: a Case Study
The study examines productive and unproductive hours in four underground mine shifts: 6 h, 8 h, 10 h, and 12 h. Moreover, two sub-scenarios of single...
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A Case Study of Fragmentation Improvement by Primer Placement in Kevitsa Mine
The effect of detonator placement on rock fragmentation by blasting was studied in the Kevitsa open-pit mine. Considering rock mass properties,...
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Characterization of Respirable Coal Mine Dust Recovered from Fibrous Polyvinyl Chloride Filters by Scanning Electron Microscopy
The characterization of respirable dust on the basis of constituent fractions and particle sizes is increasingly of concern for evaluating exposure...
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Effect of Deck Length on Ground Vibration in Dragline Bench Blasting Using Artificial Intelligence Methods
Formulating a predictive model for blast-induced ground vibration (BIGV) has always been challenging due to the complex non-linear relationship...
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An Application of Computational Fluid Dynamics to Predict Shock Loss Factors at Raise Junctions in Underground Mine Ventilation Systems
Shock loss occurs when there is a change in the area of a drift or airflow direction. These shock losses accumulate throughout the ventilation system...
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Research on Blasting Damage Control of 90° Slit Charge Structure
This study investigates the directional blasting of a 90° slit charge structure using laboratory experiments and field tests. A 90° slit charge...
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Geomechanical Monitoring of an Underground Bulk Mining Operation Using a Novel Distributed Optical Fiber Strain Sensing Method
As mines continue to deepen and become more expansive, active monitoring of larger volumes of rock mass will become more critical to calibrate...
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Maximizing the Processing of Polymetallic Concentrates via Actinide Separation and Rare Earth Retrieval
During the last decades, the growing demand for rare earth elements (REEs) has led to numerous recent studies to recover these elements from various...
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Expert Elicitation for the Resilient Design and Optimisation of Ultra-long Ore Passes for Deep Mass Mining
Extension of ore pass length has become increasingly critical for optimising energy-efficient underground mining operations. Long and ultra-long ore...
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Metals Recovery from Spent Lithium-ion Batteries Cathode Via Hydrogen Reduction-water Leaching-carbothermic or Hydrogen Reduction Process
In the present paper, the recovery of mixed spent cathodes is evaluated and performed through a hydrogen reduction process. Firstly, the lithium is...
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Efficient Separation of Iron and Alumina in Red Mud Using Reduction Roasting and Magnetic Separation
Gibbsite-type bauxite is the main material for alumina extraction by Bayer process globally, while the iron in red mud is difficult to use for the...
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Impacts of Grade Distribution and Economies of Scale on Cut-off Grade and Capacity Planning
Strategic mine planning centers on solving cut-off grade selection, capacity planning, and block sequencing. Even though significant knowledge has...
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Research on the Mechanical Characteristics of Thick Alluvium on the Surface Subsidence Features of Thin Bedrock Deposits at Depth
There are a large number of thick alluvium and thin bedrock deposits at depth in the Henan coal base. The degree of surface mining is high, and the...
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A Heuristic Methodology for Economic and Geomechanical Optimization in Sublevel Open Sto** Mining Method
The top-down extraction sequence in the sublevel open stope method leaves rib pillars to support the excavations, so the stability of the pillars and...
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A Preliminary Study on the Beneficiation and Recovery of Valuable Metals from Municipal Solid Waste Incineration Bottom Ash
In this study, a MSWI bottom ash sample was assessed to evaluate the feasibility of various physical beneficiation processes in concentrating...
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A Review on the Activation Effect of Lead Ions in Mineral Flotation
Pb 2+ plays a modifying role in the flotation behavior of various sulfide and oxide minerals. However, there is currently no consensus on the use of...
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Study on the Influence of the Seal Position on Methane Explosion Damage Parameters in Fully Sized Mine Tunnel
Methane explosions are highly destructive and constitute a primary hazard affecting mine safety. Seals are commonly employed to obstruct the...
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A Review on the 3D Cartographic and Spatiotemporal GIS Models for Safety of Accidents in Deep Underground Coal Mines
The aim of this study was the safety risk assessment of accidents that occur because of production dynamics in deep coal mining, one of the highly...
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Periodic Fracture Theory of Main Roof and Support Resistance in Shallow Mining Face with Large Mining Height
Revealing the periodic fracture pattern of the main roof and the key influencing factors of the support resistance is crucial for strata control and...
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3D Characterization of Internal Fractures in Rochester Ore Particles Crushed by Plant-Scale HPGR for Various Pressures Using High-Resolution X-Ray Computed Tomography
Recovery of metals from coarse ore particles is a great challenge for heap leaching operations of low-grade precious metal resources. Internal...
