Bat Vent® 2.0

Airborne silica, coal dust, mineral fines, and process-generated particles travel beyond active work areas. Control room operators and office staff often face ongoing low-level exposure that accumulates over time.

The Bat Vent prevents contaminated air from entering enclosed environments. It draws in external air, filters it through a three-stage system, and creates stable positive pressure inside the room. That pressure barrier blocks unfiltered air from infiltrating the space.

The result is consistent indoor air quality even when external dust levels rise.

Dust control does not end at extraction points or transfer systems. Airborne particles travel into control rooms, site offices, and other enclosed workspaces where personnel spend extended periods.

Bat Vent protects these environments through filtration and controlled pressurisation. The system filters incoming air and maintains a stable internal pressure that limits dust ingress from surrounding operations.

Many sites combine Bat Vent with other Mideco systems to control exposure across the entire operation. Bat Booth removes dust from personnel before they enter enclosed areas. Burnley Baffles reduce dust generation during bulk material transfer. Together, these systems reduce airborne exposure across both workspaces and personnel.

1. The unit draws outside air into the enclosure.
2. Air passes through the coarse pre-filter, then the fine filter, then the HEPA filter.
3. Clean air enters the room, increasing internal pressure.
4. Once pressure stabilises, the internal air cycles through the fine and HEPA filters to remove remaining particulates.
5. If pressure drops, the system reduces recirculation and increases fresh air intake to restore positive pressure.

This cycle continues automatically, ensuring a steady supply of filtered air and a protected indoor workspace.

The Bat Vent suits are enclosed environments located close to dust-generating operations.

Typical installations include:

• Control rooms
• Site offices
• Crib rooms
• Enclosures beside crushing and screening facilities
• Accommodation units near processing plants

Industries include:

• Mining
• Quarries
• Cement and construction
• Waste management and recycling
• Copper smelting
• Powder coating
• Woodworking
• Textile production
• Healthcare environments
• Infrastructure projects

Standard HVAC systems are designed for temperature control rather than pressure management; they circulate air but do not maintain controlled positive pressure to block infiltration from nearby dust-prone operations.

The Bat Vent filters incoming air through three stages and regulates internal pressure in real time. It prevents contaminated air from entering while continuously cleaning internal air. That combination delivers measurable indoor protection.

The Bat Vent protects workers who are not directly exposed to the main source of dust but who work nearby on a regular basis.

In the past few months, Australia has seen cases of silicosis among employees working in admin buildings near quarries. Unfortunately, this happened because they were unaware of the health risks involved.

Many of us spend a large portion of our lives at work. Mideco understands that, whatever industry you work in, health and safety come first for everyone involved. This is why we created the Bat Vent® – alongside our other personnel dedusting solutions – to minimise exposure of workers who might not realise that they are in fact indirectly exposed to dust.