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+Article 2 (47) |
Article 2 (47)‘ventilation shaft’ means a vertical passage used to move fresh air underground or to remove methane and other gases from an underground coal mine; 1. Prezentare generală
1.1 Referințe1.2 Cerințe identificate1.3 Standarde asociate2. Cerințe identificate
3. Standarde asociate
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