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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. Pārskats
1.1 Atsauces1.2 Identificētās prasības1.3 Saistītie standarti2. Identificētās prasības
3. Saistītie standarti
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