Thank you for the question, Mr. Chair.
We do significant investigations prior to doing any work. Boreholes are taken, and samples are taken. Engineers look at the results of this information to determine rock depth, rock quality, if there are any contaminants, and so on. This is being done all around the West Block. You may have seen trucks doing that type of investigation.
At this point, we haven't discovered anything out of the ordinary. Of course, when we're doing the rock excavation, it will require rock anchors, but this is normal, and they are used in most construction projects that do rock excavation.