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coal mining

Sealing water leaks beneath an active tunnel structure
Project Related

Underground Leak Sealing Restores Coal Terminal Operations

February 9, 2026 rockman Comments Off on Underground Leak Sealing Restores Coal Terminal Operations

Coal handling facilities are tough environments for concrete, especially when long-term water intrusion begins to undermine operations below grade. In this NCFI case study, a coal terminal was dealing with persistent underground leaks in a […]

Dennis Miller, former park manager on a dock on the west side of Duke Lake in Ryerson Station State Park. The dam seen in the background, was damaged resulting in the lake being drained in July 2005.
Failures

Coal Mining Company Ordered to pay $21M for Causing Crack in Pennsylvania Dam

November 10, 2010 rockman Comments Off on Coal Mining Company Ordered to pay $21M for Causing Crack in Pennsylvania Dam

In July of 2005, cracks began forming in the concrete dam that created Duke Lake in Ryerson Station State Park in Pennsylvania that required officials to drain the 62-acre lake. The state’s Department of Environmental […]

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