High resolution magnetic anomaly maps from ERLIS compilation: An example from Kirkland Lake

Mineral exploration assessment file information has long been considered a useful resource for developing mineral exploration strategies, and one of the most common data sets filed in assessment reports is ground magnetic surveys. The new Earth Resources and Land Information System database (ERLIS) now provides a method for rapidly accessing all references to a specific area through a series of raster images. The ERLIS provides access to the Assessment File Research Imaging (AFRI) database which comprises geoscience mineral exploration assessment file data, Mineral Deposits Inventory (MDI), together with provincial aeromagnetic data from the Ontario Ministry of Northern Development and Mines (MNDM). Conversion of the raster images of ground geophysical data to vector data files together with the concatenation of grids from adjacent claims provides a method for constructing high resolution magnetic regional images. The value of this resource is demonstrated through the construction of a single composite magnetic image derived from eight assessment file grids for an area south of Kirkland Lake, Ontario, within Pacaud and Catharine Townships. The composite grid of magnetic data provides a map with resolution that is not achieved by currently available Ontario Geological Survey airborne data sets. Details contained within the new high resolution image, permit the differentiation of lithologies and their boundaries, fault orientations and the location of alteration zones with magnetic response.
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Summary: Economics of wear in mining industry and methods by which wear cost may be reduced will be discussed.
Publication: CIM Bulletin
Author(s): V.S. Sastri, M. Elboujdaini
Issue: 1012
Volume: 90
Year: 1997
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Summary: Laboratory wear tests are important tools that can be used for the evaluation of materials for wear applications and mitigation of wear problems in the mining industry. However, laboratory test parameters must be fully characterized and test results must be carefully interpreted if a material selection is to be made. Failure to do so may lead to erroneous conclusions. Suitable laboratory tests are valid only if they reflect the field conditions to which materials are subjected. Therefore, it...
Publication: CIM Bulletin
Author(s): W. Pascheto, N. Behnood
Issue: 1012
Volume: 90
Year: 1997
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Summary: Recently, lining life of the INMETCO submerged arc furnace has been dramatically extended from an average of eleven months in the 1980s to a current record of 34 months.
This paper summarizes test work and operating results describing the development and establishment
of slag parameters that reduce corrosion of the magnesite-chrome refractory lining. The desired slag parameters are now maintained by utilizing waste streams as slag additives. This paper also discusses the successful evaluation...
Publication: CIM Bulletin
Author(s): D.M. Hoffman, R.H. Hanewald, W.J. Koshut, C. Doyle, J. Hrepic, C. Díaz
Issue: 1012
Volume: 90
Year: 1997
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Summary: Mining along with subsequent processing of the minerals often presents conditions where a wear- and/or corrosion-resistant alloy is needed to minimize downtime and maximize efficiency. This paper is intended to give an overview of the alloys that are currently being used, as well as those developed in recent years that could be used in the mining industry. Emphasis will be put on the iron-, nickel-, cobalt-based alloys and composites containing a variety of carbides. The characteristics,...
Publication: CIM Bulletin
Author(s): B. McKee, J.B.C. Wu
Issue: 1012
Volume: 90
Year: 1997
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Summary: Fine tailings produced in the milling process have traditionally been disposed of in tailings ponds. Attempts have been made to use these fine tailings in backfill, however, to date the majority of backfill operations have utilized only a small percentage of fines. The
remaining fines are, therefore, being sent to tailings ponds creating a waste disposal and environmental problem. This disposal practice is even more acute in the gold milling industry where fine grinding, required for value...
Publication: CIM Bulletin
Author(s): L.M. Amaratunga, G.G. Hein, D.N. Yaschyshyn
Issue: 1012
Volume: 90
Year: 1997
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Summary: In 1991/1992, INCO undertook a successful R&D program aimed at extending the lining lives of the top blown rotary converters (TBRCs) at its Copper Cliff Nickel Refinery (CCNR) and the electric furnace at INMETCO. At the laboratory scale, this effort was divided into three phases. In the first part, mineralogical work was performed on six refractories that were either currently being used to line these vessels or were considered suitable alternatives. In the second part, this mineralogical...
Publication: CIM Bulletin
Author(s): C. Doyle, K. Cushnie, C. Díaz, J. Hrepic, J. Brennan
Issue: 1012
Volume: 90
Year: 1997
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Summary: Wear damage is responsible for very high maintenance costs and significant production losses in the oil sands industry of northern Alberta. It affects all areas of operations and involves a panoply of wear mechanisms from low stress sliding abrasion at extremely frigid temperatures during winter mining, to elevated temperature erosion/corrosion in processes where bitumen is converted to lighter hydrocarbon products.
There is no universal panacea to defend against such diverse attack and a...
Publication: CIM Bulletin
Author(s): R. Llewellyn
Issue: 1012
Volume: 90
Year: 1997
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Summary: A precise analysis of the noise emitted by an aluminum plant has shown that one of the main sources of noise is the noise emitted by an exhaust stack 40 m high and 1.8 m diametre, emitting a pure tone at 320 Hz. Because a classical cost effective solution is not available for this source, active noise control (ANC) solution was investigated.
Commonly available ANC systems, however, are not applicable to the chimney considered because the diameter of the stack (f) is too important compared to...
Publication: CIM Bulletin
Author(s): André L’Espérance, Martin Bouchard, Bruno Paillard, Jean-Claude Dubé
Issue: 1012
Volume: 90
Year: 1997
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