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Plasma blasting method
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Patent number 5,106,164
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Issue date Apr 21, 1992
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Noranda Inc.
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Frank Kitzinger
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E21 - EARTH DRILLING MINING
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Tuyere pyrometer
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Patent number 4,619,533
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Issue date Oct 28, 1986
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Noranda Inc.
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John M. Lucas
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G01 - MEASURING TESTING
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Voltage monitor
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Patent number 4,281,290
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Issue date Jul 28, 1981
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Noranda Mines Limited
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John G. Peacey
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G01 - MEASURING TESTING
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Froth level monitor
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Patent number 4,059,016
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Issue date Nov 22, 1977
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Noranda Mines Limited
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Frank Kitzinger
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G01 - MEASURING TESTING