10/13/2026
Have you ever wondered what happens after we’re done with an exploration site?
We’re committed to operating responsibly at every stage of our project, and our exploration drilling programs are designed to be as low impact as possible and leave very few traces behind.
Once we’re done pulling core samples from a drill hole, we seal it off completely with cement to prevent voids from forming and surface water from interacting with groundwater. This sealing process is regulated by the Minnesota Department of Health. The machine used to pump cement into the hole can be seen at the top left of the image below. As the cement is pumped, groundwater is pushed out of the hole (photo at top right) and recycled through the machine to make more cement. Any leftover water is captured and taken off site for treatment. Next, the casing is pulled (bottom left photo) and the hole is sealed. Finally, the site is reclaimed with soil and vegetation (bottom right).