Anbieter: moluna, Greven, Deutschland
EUR 17,35
Anzahl: Mehr als 20 verfügbar
In den WarenkorbZustand: New. KlappentextUnderground stone mines in the United States use the room-and-pillar method of mining in generally flat-lying bedded formations. Pillar and roof span stability are two essential prerequisites for safe working conditions in roo.