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Mining equipment. Multipurpose safety systems for coal mines. Systems for observation and notification of an accident. General technical requirements
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Arrangements for fastening heat insulation of steel vessels and apparatus. Construction and dimensions. Technical requirements
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Iron ores, concentrates, agglomerates and pellets. Determination of silica spectrophotometric method
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Coals of Far East for power supply purposes. Specification
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Benzene hydrocarbons and allied products. Method of determination of sulphuric acid colour
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