Monitoring of radiation variables in the underground environment

Abstract A review of instrumentation for the monitoring of radiation variables in the underground environment is presented. Several continuous monitoring systems, grab-sampling systems, personal dosimeters and time-integrating environmental monitors are discussed. The discussion is mostly restricted to instrumentation developed, used, tested or under contract by CANMET. The merits, disadvantages and main uses of the above instrumentation are indicated.The technical evaluations conducted by CANMET and the contracts awarded by CANMET to private industry are part of a long-term program and continuous effort aimed at evaluating and stimulating the development of advanced instrumentation for better environmental and personal monitoring.
Keywords: Radiation, Monitoring, Underground mining, Environmental control, Dosimeters, Radon gas, Air quality.
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Publication: CIM Bulletin
Author(s): P.E. WEIDMARK
Issue: 832
Volume: 74
Year: 1981
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Summary: This paper describes the revisions to the heating and ventilating system at the Frood-Stobie mill, which resulted in substantial savings in energy costs.
Publication: CIM Bulletin
Author(s): M. TAYLOR, C.R. KERR
Keywords: Energy management, Conservation, Inco Metals Company, Frood-Stobie mill, Heating systems, Ventilation systems, Natural gas.
Issue: 832
Volume: 74
Year: 1981
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Summary: This paper discusses past and current energy use patterns in the mining and manufacturing sectors of the industrial minerals industry. Information is presented on the primary energy input types as purchased by the industry, the quality and form of the energy actually required by the various production processes, and the residual form of this energy, either embodied in the product or rejected in gaseous and liquid waste heat streams. With the continuing concerns about the availability of...
Publication: CIM Bulletin
Author(s): BARRY JAMES
Keywords: Industrial minerals, Energy, Production, Productivity, Fuel, Electricity.
Issue: 832
Volume: 74
Year: 1981
Text
Summary: This paper discusses past and current energy use patterns in the mining and manufacturing sectors of the industrial minerals industry. Information is presented on the primary energy input types as purchased by the industry, the quality and form of the energy actually required by the various production processes, and the residual form of this energy, either embodied in the product or rejected in gaseous and liquid waste heat streams. With the continuing concerns about the availability of...
Publication: CIM Bulletin
Author(s): BARRY JAMES
Keywords: Industrial minerals, Energy, Production, Productivity, Fuel, Electricity.
Issue: 832
Volume: 74
Year: 1981
Text
Summary: Boliden Metal Corporation has developed a technique to treat complex copper concentrates containing large amounts of lead, zinc, arsenic, antimony and bismuth which cannot be treated in conventional smelters due to the impurities.Tests were carried out to treat such complex copper concentrates in the TBRC. They were performed in a pilot-plant TBRC with charges of 5 tons. These tests resulted in a new method to treat complex copper raw materials and produce a blister copper low in impurities....
Publication: CIM Bulletin
Author(s): STIG PETERSSON, SUNE ERIKSSON, CHRISTER FRIDFELDT
Keywords: Process metallurgy, Copper concentrates, TBRC, Boliden, Smelting, Ronnskar Works, Converters, Rotary converters, Furnaces.
Issue: 832
Volume: 74
Year: 1981
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Summary: The Fox Mine has been producing copper/zinc ore since 1970 at a rate of approximately one million tons per year, and until 1978 all production was derived from longhole open stapes. In June 1978, a trial slope using bighole mining methods was started to eliminate the development of two sublevels between 400 level and surface. The trial proved to be successful, and bighole mining is now an accepted mining method for both slopes and pillars at Fox Mine.When production blasting was started in...
Publication: CIM Bulletin
Author(s): E.N. DuRUSSEL
Keywords: Underground mining, Sulphur dioxide, Blasting, Fox Mine, Bighole mining, Sloping, Development.
Issue: 832
Volume: 74
Year: 1981
Text
Summary: Today's market for columbium has only developed in the last two decades, and in this sense it is "newer" than molybdenum, vanadium and most other steel alloying elements. In this short period, it has assumed a very important role in steel alloying and in superalloys. From a few hundred thousand pounds of columbium in 1960, consumption has grown to nearly 30 million pounds per year, with a market value approaching two hundred million dollars.To assess the outlook for columbium, we...
Publication: CIM Bulletin
Author(s): EDGAR A. MANKER
Keywords: Columbium, Mineral economics, Alloys, Ferroalloys, Markets, Pipeline steels, Automobiles, Construction.
Issue: 832
Volume: 74
Year: 1981
Text
Summary: A recent pilot-plant program carried out at Rio Algom's Quirke uranium mine at Elliot Lake, Ontario is described. The goal of the research was the production of tailings basin effluents which were low in total radium-226. The process tested involved precipitation of radium with barium chloride and sedimentation in plastic-lined settling ponds. Adjustment of the tailings basin overflow from its normal value of pH9.5 by addition of sulphuric acid to about pH 7.5 was found to give approximately...
Publication: CIM Bulletin
Author(s): D. MOFFETT, E. BARNES, J.N. HILTON
Keywords: Radium, Precipitation, Sedimentation, Settling ponds, Uranium milling, Tailings, Environmental control, Barium chloride.
Issue: 832
Volume: 74
Year: 1981
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