Silica Dust Testing Statement


To confirm compliance with OSHA’s Respirable Crystalline Silica Standard rules, Amerimix hired an independent third party to perform exposure testing during eight-hour shifts at three separate job sites.


The testing concluded that workers’ average exposure to both dust and silica were below the Permissible Exposure Limit (PEL) defined by OSHA. 

  • Dust:  Average exposure to dust was measured at 0.81 mg/m3 – well below the limit of 5.0 mg/m3.
  • Crystalline Silica: Average exposure to dust was measured at 10.3 μg/m3– also well below the limit of 50 μg/m3.

Click here for full testing data.  See the full Amerimix statement regarding silica dust testing and OSHA compliance.


Though dust and silica levels were deemed safe, Amerimix recommends that all employees exposed to respirable dust or silica wear appropriate personal protective equipment (PPE) as defined by OSHA.