Dbt Gmbh

Rag Aktiengesellschaft

Reiner Schuster

Peter Gross

Norbert Gessner

J&uuml;rgen Knoblauch

Rainer Lodes

Methods for pillar recovery in chamber-and-pillar working materials in underground stratified beds are disclosed. Additionally, tubbing units for pillar recovery in chamber-and-pillar working of materials in underground stratified beds are disclosed. An extraction device is aligned obliquely to pillar galleries located between the pillars and the roof is supported in front of the retreat face of the extraction device with a plurality of tubbing units, each tubbing unit being adjustable in height and width and movable through operation of a vehicle. The tubbing units may be moved through other tubbing units that are set, and reset in another position.

Method for pillar recovery in chamber-and-pillar working and tubbing unit for pillar recovery

The invention relates to a container for fluids having a volume ( ) which can be filled with a fluid, and emptied by pressurizing the fluid by subjecting it to internal gas pressure. The invention is characterized in that the container has a valve device ( ) for filling the volume ( ) with the fluid, while the internal gas pressure is generated by compressing a gas trapped in the container ( ). It is thus not necessary to fill the receptacle with pressure gas separately.

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Saarbrücken, Germany

Reiner Schuster