We have developed a product that reduces the impact of explosions in coal mines, creating safer conditions for workers.
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A long-lasting alternative to rock dust for coal mines

Imerys ImerCoal calcium carbonate-based rock dust products are specifically engineered for the coal mining industry to provide safety to coal miners.

Calcium carbonate rock dust is commonly applied to the roof, ribs and floor of coal mines to help prevent explosions from propagating through a mine. If an explosion occurs, the rock dust disperses in the air along with the coal dust, neutralizing the combustible coal dust.

ImerCoal calcium carbonate is available in two grades: ImerCoal Rock Dust for dry mine operations, providing conventional rock dust protection along with a superior white marble colour. It can be applied with conventional dusting systems.

ImerCoal MT (Moisture Tolerant) Rock Dust is the right choice for mine environments that experience high-moisture. When exposed to water, the new rock dust doesn’t cake, guaranteeing it will continue to function even in damp conditions. It is expected to require less maintenance than conventional dust and therefore reduce costs and frequency of reapplication.

ImerCoal calcium carbonate meets all standards and requirements of 30 CFR 75.2 and has the same application methods as conventional rock dusts, but with a smoother application flow. It will increase safety in dry, wet or humid mine conditions, and offers cost savings as it lasts longer than alternatives – it’s still fresh six weeks after application.

Key features

  • Hydrophobic
  • Superior white marble
  • Meets all standards and requirements of 30 CFR 75.2
  • Same application method as conventional rock dusts

Key benefits

  • Increased safety in wet or humid mine conditions
  • Cost savings due to the decreased need of reapplication due to caked dust (still fresh 6-weeks later)
  • Smoother application flow
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ImerCoal Moisture-Tolerant Rock Dust | Imerys
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