The U.S. Department of Labor announced Tuesday that it determined Henry Brick Co. exposed workers to silica crystalline dust, which has the potential to lead to lung cancer, chronic obstructive pulmonary disease and kidney disease.

According to a news release, OSHA found 11 serious citations, including:

Exposing workers to airborne concentrations of crystalline silica dust of up to six-and-a-half times the permissible exposure level.

Failed to evaluate and implement engineering controls and work practices to reduce and maintain employee exposure.

Failed to provide effective training to employees.

Neglected to offer free medical surveillance.

Required employees to wear respirators without first providing training as required.

Neglected to fit test or provide medical evaluation for workers required to wear respirators.

Allowed employees to work in areas that required respirators without providing a respiratory protection program that met requirements.