BACK TO CATEGORIES Photo ID: 1002 (Click photo to view original size.) Category: Silica Hazard: Overexposure to silica during cleanout of batch mixer. Also confined space violations; no positive lockout of mixer. Standard Violated: 1910.1000 and 1910.146 Corrective Action: Employer established a respirator program initially, then installed automatic power washers for each mixer. Employer also developed a PRCS program and rewired the mixers for LO/TO. Description: Employees engaged in the cleanout of batch mixer