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perforage de fonçage (oil shale production) | |||
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forage des puits |
drilling well : 22 phrases in 11 subjects |
Coal | 5 |
Environment | 1 |
Industry | 1 |
Life sciences | 1 |
Metallurgy | 8 |
Mining | 1 |
Natural resourses and wildlife conservation | 1 |
Oil / petroleum | 1 |
Transport | 1 |
United Nations | 1 |
Water resources | 1 |