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SU1763658A1
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Method of working mineral deposits
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Method of mining thick flat deposits
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Converter of exhaust gases of internal combustion engine
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Power nut-driven head
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Neutralizer for exhaust gases of internal combustion engine
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Pillar working method
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Method of erecting supporting pillar
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Method of working gently sloping beds of mineral deposits
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Method for working columnar pillars
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Consolidating compound
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Bend of pipe line for transportation of mixtures
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Method for erecting artificial support
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Device for joining of insulated conductors of wires
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Composition for anchor fixing
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Protecting unloading device for stowing pipe
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Protective discharging device for stowing pipeline
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Method for working interstall support pillars
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Method of controlling worked space roof
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Method for strengthening of rock
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SU1693256A1
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Rock-securing device
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