CIM Journal Vol.6 No.4

CIM Journal, Vol. 6, No. 4, 2015
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Summary: With growing international interest in mineral resources in Central Africa, the importance of transparency in resource development cannot be overemphasized. Without transparency, the region cannot maximize revenues from resources. Although the importance of transparency is beginning to be recognized, many factors can hold back the gains of transparency from resulting in real economic development for the countries involved. This paper reviews current financial, economic, and development...
Publication: CIM Journal
Author(s): C. Nwapi, A. Ingelson
Keywords: Central Africa, Mineral development, Subnational transparency, Transparency
Issue: 4
Volume: 6
Year: 2015
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Summary: Vale has been actively evaluating new technologies to curtail diesel emissions. This paper discusses the selection, installation, operation, and evaluation of the MANN+HUMMEL SMF®-AR diesel particulate filter system to reduce diesel particulate matter emissions in underground mines. The system uses a sintered metal filter element, an iron fuel-borne catalyst with an onboard dosing system, an electric heater that uses onboard power, and a sensor-based control unit. More than 6,000 h of testing...
Publication: CIM Journal
Author(s): J. S. Stachulak, C. Allen, V. Hensel
Keywords: Diesel emissions, Diesel particulate filter (DPF), Diesel particulate matter (DPM), Underground mines
Issue: 4
Volume: 6
Year: 2015
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Summary: This paper presents the mixed spectral behaviour of iron ores from deposits in Gua, India. Spectral signatures of powder samples and their two-component mixtures were generated by spectro - radiometry. Spectra were divided into continuum and absorption components. A modified Gaussian model was used to extract subtle features from the absorption components of the spectra. A linear unmixing model (LUM) applied to estimate minerals from the spectra of mixed powder samples indicated that this...
Publication: CIM Journal
Author(s): S. Patteti, B. Samanta, and D. Chakravarty; D. Dutta
Keywords: Abundance estimation, Hyperspectral, Iron ore, Linear mixing model (LMM), Linear unmixing model (LUM), Modified Gaussian model (MGM)
Issue: 4
Volume: 6
Year: 2015
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Summary: Conciliation between expansion of the mining industry and sustainable development requirements represents a great challenge. With regards to the various controversies touching this industry, the last decade was marked by a great mobilisation phase of all stakeholders. However, there are still many shortcomings regarding operationalization of the sustainable development concept. This challenge involves shared responsibility between the stakeholders. It requires strengthening government...
Publication: CIM Journal
Author(s): N. Bensalah, D. Ferrand, et C. Villeneuve
Keywords: Adaptation, Climate change, Controversy, Corporate social responsibility, Environment, Ethics, Mines, Stakeholders, Sustainable development
Issue: 4
Volume: 6
Year: 2015
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Summary: In an environment of rising energy prices and mining at greater depths, cost-efficient loading and hauling equipment is essential. Conducted at an underground mining operation, this study analyzes the energy consumption and gas emissions of diesel and electric load-haul-dump machines (LHDs) with similar bucket capacities. Based on energy prices from the first quarter of 2014, results of discrete event simulation show that energy costs for diesel and electric LHDs are US$0.24/t and US$0.07/t,...
Publication: CIM Journal
Author(s): A. Salama, J. Greberg, B. Skawina, and A. Gustafson
Keywords: Discrete event simulation, Energy consumption, Gas emissions, Loading systems
Issue: 4
Volume: 6
Year: 2015
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