Article content The Nuclear Waste Management Organization has started drilling test boreholes in South Bruce, an important step to determining if the location is suitable to store used nuclear fuel underground. The first of two boreholes was started northwest of Teeswater in recent weeks and has reached a depth of about 20 metres as the NWMO evaluates the potential of the site as a deep geological repository. We apologize, but this video has failed to load. Try refreshing your browser. Boreholes started at potential DGR site in South Bruce Back to video “It is kind of a crucial step for us and for the project,” said Martin Sykes, senior geoscientist with the NWMO. “It is that next step, from understanding what is on the surface to understanding what is at depth.”