underground mining /ENERGY-MINING/
[DE] Abbau unter Tage; Untertagebau; Untertagebetrieb
[EN] underground mining (operations)
[FR] exploitation minière souterraine
deep mining,underground mining /ENERGY-MINING/
[DE] Tiefbau
[EN] deep mining; underground mining
[FR] exploitation souterraine; extraction souterraine
underground mining,underground winning,underground work /SCIENCE/
[DE] Grubenbau; Untertageaufschliessung
[EN] underground mining; underground winning; underground work
[FR] exploitation en mine