WORKING OF HORIZONTAL DEPOSITS (MINING)
-
BTMINING METHODS + METHODS OF WORKING (MINING)
-
UDC622.273
-
Descriptor GERABBAU HORIZONTALER LAGERSTÄTTEN (BERGBAU)
-
Descriptor ENGWORKING OF HORIZONTAL DEPOSITS (MINING)
-
Descriptor FREEXPLOITATION DE GÎTES HORIZONTAUX (INDUSTRIE MINIÈRE)
-
NTLONGWALL MINING
-
NTSTOWING OR FILLING METHODS (MINING)