Vulcan Materials Company filed a current report on October 30, 2026, disclosing that its subsidiary Calmat Co. received an imminent danger order from the Mine Safety and Health Administration on October 27, 2026, at the Lexington Quarry in Los Gatos, California.

Key Highlights

  • Order issued: Calmat Co., a subsidiary of Vulcan Materials Company, received an imminent danger order from the Mine Safety and Health Administration on October 27, 2026.
  • Issuing authority: The order was issued under section 107(a) of the Federal Mine Safety and Health Act of 1977.
  • Location: The order applied to the Lexington Quarry in Los Gatos, California.
  • Reason for order: The order was issued to remove personnel exposed to fall hazards while performing maintenance.
  • No injuries: According to the filing, no injuries occurred.
  • Corrective action: The company reported that it "promptly took corrective action concerning the incident to protect the personnel and terminate the order."

Mine Safety Order at Calmat Co.'s Los Gatos Quarry

According to the filing, Calmat Co., a subsidiary of Vulcan Materials Company (NYSE:VMC), received an imminent danger order on October 27, 2026, issued by the Mine Safety and Health Administration (MSHA) under section 107(a) of the Federal Mine Safety and Health Act of 1977. The order was directed at the company's Lexington Quarry located in Los Gatos, California.

The filing states that the order was issued to remove personnel who were exposed to fall hazards while performing maintenance at the quarry. The company disclosed that no injuries occurred as a result of the incident. The registrant further reported that it "promptly took corrective action concerning the incident to protect the personnel and terminate the order."

The current report was signed by Jerry F. Perkins Jr., Chief Administrative Officer of Vulcan Materials Company, and was submitted to the Securities and Exchange Commission on October 30, 2026, under Item 1.04, Mine Safety.

What Was Disclosed

Vulcan Materials Company disclosed via an Item 1.04 current report that subsidiary Calmat Co. received an MSHA imminent danger order on October 27, 2026, at its Lexington Quarry in Los Gatos, California, citing fall hazards during maintenance. No injuries were reported, and corrective action was taken.