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reverse-circulation drilling
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mining.
Counterflush-Bohren
n
;
Counterflush-Verfahren
n
;
Bohren mit Verkehrtspülung
(Gegenstromspülung)
;
Gegenstrombohren
n
reverse circulation drilling
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geol.
Bohren mit Umkehrspülung
;
Rotationsspülbohrung
f
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