When we are talking millimeters...
Constructionsubsidence is all about mm from time to time. We take care that you get enough info about eventual constructionsubsidences.

One of our most special projects so far, was to put a drillrig in right direction for 5 holes, 20m long into a cave. The work was done in cooperation with TBL brunnsborrning for Skanska Tekra Oy when they builded the sewage treatment facility in Mariehamn 2004.

Another was to direct a drillrig for over 100m holes from top of an island into the sea with a depth of minimum -10m. Theser where for cables for windmills at Båtskär, south of Mariehamn for Kraftnät Åland Ab. This was also in cooperation with TBL brunnsborrning.