| 1. | Tunnelling machines - air locks - safety requirements
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| 2. | Tunnelling machines - air locks - safety requirements
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| 3. | Air regulation systems in mining - air locks - building and operation
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| 4. | Tunnelling machines - air locks - safety requirements ; german version en 12110 : 2002
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| 5. | Power assisted air gates - travel - way air locks - type doors with pressure
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| 6. | Air lock feeder
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| 7. | Air lock valve
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| 8. | Air lock tank
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| 9. | Air regulation systems in mining - belt - conveyors - way air locks - dimensions , identifications , requirements and testing
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| 10. | Air regulation systems in mining - wing air locks for travelling tracks - double - wing type doors with pressure reduction
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मोबाइल