scholarly journals Integrating the Theory of Sampling into Underground Mine Grade Control Strategies

Minerals ◽  
2018 ◽  
Vol 8 (6) ◽  
pp. 232 ◽  
Author(s):  
Simon Dominy ◽  
Hylke Glass ◽  
Louisa O’Connor ◽  
Chloe Lam ◽  
Saranchimeg Purevgerel ◽  
...  
Keyword(s):  
Control Strategies ◽  
Underground Mine ◽  
Grade Control ◽  
Theory Of Sampling

scholarly journals Integrating the Theory of Sampling into Underground Mine Grade Control Strategies: Case Studies from Gold Operations

Minerals ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 238
Author(s):  
Dominy ◽  
Glass ◽  
O’Connor ◽  
Lam ◽  
Purevgerel
Keyword(s):  
Case Studies ◽  
Control Strategies ◽  
Control Process ◽  
Control Programme ◽  
Small Scale ◽  
Sampling Errors ◽  
Sample Collection ◽  
Representative Sampling ◽  
Grade Control ◽  
Theory Of Sampling

Grade control aims to deliver adequately defined tonnes of ore to the process plant. The foundation of any grade control programme is collecting high-quality samples within a geological context. The requirement for quality samples has long been recognised, in that these should be representative and fit-for-purpose. Correct application of the Theory of Sampling reduces sampling errors across the grade control process, in which errors can propagate from sample collection through sample preparation to assay results. This contribution presents three case studies which are based on coarse gold-dominated orebodies. These illustrate the challenges and potential solutions to achieve representative sampling and build on the content of a previous publication. Solutions ranging from bulk samples processed through a plant to whole-core sampling and assaying using bulk leaching, are discussed. These approaches account for the nature of the mineralisation, where extreme gold particle-clustering effects render the analysis of small-scale samples highly unrepresentative. Furthermore, the analysis of chip samples, which generally yield a positive bias due to over-sampling of quartz vein material, is discussed.

scholarly journals Dusts Control operations in Ririwai Mines, Kano State, Nigeria

2021 ◽  
pp. 29-36
Author(s):  
Engr. Amosu C.O. ◽  
Keyword(s):  
Soil Water ◽  
Best Practice ◽  
Control Strategies ◽  
Underground Mine ◽  
Dust Control ◽  
Respirable Dust ◽  
Control Methods ◽  
Metallic Particles ◽  
The Impact ◽  
Water Vegetation

Respirable dust is everywhere (in the surface and underground mine) operations and its environs. Ririwai Tin mine is laden with dust of metallic particles of Arsenic (As), Chromium (Cr), Lead (Pb) and Zinc (Zn). These particles are also found in the soil. Continuous inhalation of dust could lead to irreversible diseases. This paper addresses the control of dust, using previous review of prevailing metallic concentrates. This research answers questions like which are the dust control strategies to be adopted by Ririwai tin mine to obtain best practice? What challenges will Ririwai tin mine face when applying dust control methods in their operation? What is the impact of dust laden with metallic particles on soil, water, vegetation and man in Ririwai tin mine?

scholarly journals Dusts Control operations in Ririwai Mines, Kano State, Nigeria

2021 ◽  
Vol 1 (2) ◽  
pp. 29-36
Author(s):  
Amosu C.O.
Keyword(s):  
Soil Water ◽  
Best Practice ◽  
Control Strategies ◽  
Underground Mine ◽  
Dust Control ◽  
Respirable Dust ◽  
Control Methods ◽  
Metallic Particles ◽  
The Impact ◽  
Water Vegetation

Respirable dust is everywhere (in the surface and underground mine) operations and its environs. Ririwai Tin mine is laden with dust of metallic particles of Arsenic (As), Chromium (Cr), Lead (Pb) and Zinc (Zn). These particles are also found in the soil. Continuous inhalation of dust could lead to irreversible diseases. This paper addresses the control of dust, using previous review of prevailing metallic concentrates. This research answers questions like which are the dust control strategies to be adopted by Ririwai tin mine to obtain best practice? What challenges will Ririwai tin mine face when applying dust control methods in their operation? What is the impact of dust laden with metallic particles on soil, water, vegetation and man in Ririwai tin mine?

Adolescents' Use of Resource Control Strategies and Bullying Behaviors

2017 ◽  
Author(s):  
Kelly N. Clark ◽  
Nicole B. Dorio ◽  
Michelle K. Demaray ◽  
Christine K. Malecki
Keyword(s):  
Control Strategies ◽  
Resource Control ◽  
Bullying Behaviors
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