Gas Migration in EBS and Geosphere (GMT) - Removal of Layers 6-5

Layer 6 and layer 5 were the bottom layers of the silo to be excavated.

Due to space limitations the excavation of the sand/bentonite was more difficult in the lower areas and excavation techniques had to be adapted to take account of the reduced space.

Core sampling from the bottom layers. In photo: GTS site manager Toni Bär


The GTS underground facilities are also available to interested 3rd parties for underground testing and research. The GTS offers cost-effective access to a fully developed, well characterised underground research facility with round the year logistical support - please contact Dr. Ingo Blechschmidt, Head of the Grimsel Test Site, for further details.