Renner Boulevard Mine Remediation

• Project typeCapital Equipment / Other Projects
• Project cost$1,500,000
• Project schedule2025

Project purpose

In 1987, mining was completed on the west side of Renner Boulevard south of K-10. At that time, tunnels were mined under Renner Boulevard to provide access to the east side of the road for additional mining activities. Due to poor mining processes, the floors of the mine were excavated thin, leaving questionable structural capacity for the pillars.

In certain areas of the mine, the pillars are punching through the floor of the mine, which is causing the roof to collapse. Staff has set monitoring devices along Renner Boulevard to ensure the tunnel ceilings are not moving. The funding for this project will keep remediation funds available should they be needed.

Project description

Fill the three quarried tunnels under Renner Boulevard by using “rock slinging.” This is a process whereby a bore hole is drilled from the surface into the mine, and small rocks are used to fill the voids.

Current status

The mine is currently being monitored. No corrective action is planned at this time.