Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/6611001
Is Reference of Gateroad driven simultaneously with the longwall face-en#Sense
Roadway advancing in sequence with the faceline-en#Sense
Face gate-en#Sense
Face gate road-en#Sense
Galería de acompañamiento-es#Sense
Face road-en#Sense