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Would there be significant dust created from the mining of Alum Shales?

Any dust emissions can be effectively controlled.

Alum shale is a fine-grained rock that can produce dust when crushed or handled in dry conditions. However, modern mining operations in Sweden are required by law to prevent and minimize dust emissions, particularly if the material contains low concentrations of metals like uranium, arsenic, or cadmium, which are present in alum shale.

To control dust, mining companies apply proven mitigation measures, including:

  • Water spraying on roads, stockpiles, and crushing equipment
  • Enclosed conveyors and crushers to prevent airborne dispersion
  • Wheel washing stations and speed limits for vehicles
  • Real-time air quality monitoring around the mining and processing site
  • Covering stockpiles and waste materials, especially during dry and windy conditions

Under the environmental code (miljöbalken), any mining operation must receive an environmental permit where dust management is specifically evaluated, and detailed air quality protection plans are required. The Swedish Environmental Protection Agency also provides guidance on minimizing particulate emissions from industrial sites.

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