A 321-sq km contract area was granted for CBM rights near Essen in Nordrhein-Westfalen on 24 Apr â18. The contract runs to Apr â23.  * Thyssen VermÃ¶gensverwaltung GmbH, Patentverwertungsgesellschaft fÃ¼r LagerstÃ¤tten, Geologie und BergschÃ¤den GmbH (PVG).
A 321-sq km contract area was granted for CBM rights near Essen in Nordrhein-Westfalen on 24 Apr â18. The contract runs to Apr â23. * Thyssen VermÃ¶gensverwaltung GmbH, Patentverwertungsgesellschaft fÃ¼r LagerstÃ¤tten, Geologie und BergschÃ¤den GmbH (PVG).