NIOSH-Validated Silica Filtration System Cuts Respirable Dust by 93% at Mine Sites
According to Safety+Health Magazine, NIOSH and bulk material handling manufacturer Benetech Inc. have jointly developed a silica dust filtration system called the Dustinator, which can reduce respirable crystalline silica at mine sites by up to 93%.
How the System Works
The Dustinator is designed to retrofit onto existing bins, tanks, and conveyor systems, making it a practical option for operations that cannot replace infrastructure wholesale. NIOSH and Benetech engineered and tested three subsystems meant to work in combination: passive dust control, active dust filtering, and spray dust suppression. Testing focused on belt conveyors and transfer points, which are common dust generation hot spots in mining and bulk material handling.
“System testing demonstrated the effectiveness of enclosing the conveyors, crushers and transfer point, while providing active filtration via the Dustinator, to remove residual dust and lower the pressure inside the enclosure, thereby preventing the escape of dust,” NIOSH stated, according to Safety+Health Magazine.
The agency notes that exposure to respirable coal mine dust is the primary trigger of coal workers’ pneumoconiosis, commonly known as black lung, and that cases of the disease are on the rise.
What It Means for Subcontractors
- Retrofittable design matters. The Dustinator mounts onto existing crushers, conveyors, and transfer points, meaning mining and excavation subcontractors don’t need to overhaul equipment to achieve a 93% reduction in airborne silica. That’s a significant compliance tool ahead of MSHA or OSHA inspections.
- Black lung liability is a real exposure. With black lung cases rising, subcontractors operating in coal, hard rock mining, tunneling, or heavy dust environments face growing regulatory and legal scrutiny. A NIOSH-validated system provides documented due diligence.
- Multi-subsystem approach sets the standard. Because the system combines passive enclosure, active filtration, and spray suppression, subcontractors evaluating dust control should ask vendors whether their solutions address all three mechanisms, not just one.
- Transfer points are the target. If your crew works around conveyor transfer points or crusher discharge, this technology was specifically tested for those conditions. That specificity makes it directly applicable to quarry, aggregate, and mine site subcontractors.
