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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. Ülevaade
1.1 Viited1.2 Tuvastatud nõuded1.3 Seotud standardid2. Tuvastatud nõuded
3. Seotud standardid
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