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+Article 2 (49) |
Article 2 (49)‘drainage system’ means a system which may comprise multiple methane sources and which drains methane-rich gas from coal seams or surrounding rock strata and transports it to a drainage station; 1. Översikt
1.1 Referenser1.2 Identifierade krav1.3 Relaterade standarder2. Identifierade krav
3. Relaterade standarder
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