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MSHA: Signal Peak Silica did not inspect and maintain dam in 2025 collapse

In its final report, MSHA found Signal Peak Silica and Stout Excavating did not inspect and maintain the tailing pond dam that ruptured, overturning an excavator & killing the operator.

MSHA: Signal Peak Silica did not inspect and maintain dam in 2025 collapse

January 30, 2026 · In its final report, MSHA found Signal Peak Silica and Stout Excavating did not inspect and maintain the tailing pond dam that ruptured, overturning an excavator & killing the operator.