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| cross-adit-cut (Erzbergbau); exploratory drift; exploring drift; exploring heading; exploring mine; exploring place (zur Ermittlung unbekannter alter Grubenbaue); gopher (drift, von unregelmäßigem Verlauf); monkey drift; pilot drift; prospect drift; prospect entry; prospect tunnel; prospecting cross-cut (zur Lagerstättengrenze); prospecting opening | |||
| Erkundungsstrecke: 1 phrase in 1 subject |
| Mining | 1 |