Leading practices

Below is a summary of available MOSH dust practices for industry. Complete practice guides can be uploaded from the “documents” folder.

Leading practice

In-Stope Atomisation for dust suppression

Some of the most effective approaches to dust control & reducing the exposure of employees to respirable dust emanating from mining activity is to prevent the respirable dust from getting airborne and removing dust from ventilating air. Various methods have been employed across the world to achieve this. Suppression of dust using water-based methods is a widely known phenomenon, and in most instances has proven to be effective.

Read More

Conveyor Belt Automated Transfer Point Fogging Dust Suppression System

The Conveyor Belt Automated Transfer Point Fogging Dust Suppression System has been recognised as a primary engineering dust control system at ore transfer points.

Read More

Continuous Real-time Monitoring of Airborne Pollutant Engineering Controls

This practice allows for immediate intervention when the continuous real-time monitoring system detects excessive airborne pollutant levels.

 

 

Fogger

The installation of fogger/mist-spray systems to capture airborne respirable dust:

  • Station ore-pass systems – gold mines
  • Main intake airways with conveyer belts – coal mines
  • Transfer points on surface – coal mines
  • Fogger
  • Simple leading practice

    Footwall/sidewall treatment

    The wetting of footwalls and sidewalls with water and surfactants. Spray cars, drawn by a locomotive, spray the solution onto the foot and side walls so as to consolidate the dust and to prevent it becoming airborne.


    Multi-stage filtration system (MSFS)

    The principle of multi-stage filtration system ensures that contaminated air is drawn/extracted by means of a fan through the filtration unit where it undergoes the following stages of filtration:

    • Stage 1: A pre-filtration system removes large dust particles
    • Stage 2: This stage consists of two layers of oil-wet fibre pads
    • Stage 3: An H-grade High Efficiency Particulate Air Filter (HEPA) is used to ensure complete removal of harmful dust

    Winch cover

    In principle, the winch cover simply involves fitting a cover to the winch drum guard or to the winch casing of existing winches thereby reducing winch operators' exposure to harmful dust.