u/polecon-can

A 2003 study (Karpinski, 'Exposure to inhalable flour dust in Canadian flour mills') concluded that a large-scale flour milling facility could not practically reduce personal flour dust exposure levels below 0.5 mg/m³ without forcing workers into respirators for entire shifts. At the time, standard operations like packing and sweeping routinely caused ambient dust spikes well over 5.0 to 10.0 mg/m³.

However, as of 2026, Australia is implementing a strict, nationwide 0.5 mg/m³ Workplace Exposure Limit (WEL) for inhalable flour dust.

I am trying to understand what sort of engineering, material science, automation, etc breakthroughs have occurred over the last two decades to bridge this massive gap.

A 2003 study (Karpinski, 'Exposure to inhalable flour dust in Canadian flour mills') concluded that a large-scale flour milling facility could not practically reduce personal flour dust exposure levels below 0.5 mg/m³ without forcing workers into respirators for entire shifts. At the time, standard operations like packing and sweeping routinely caused ambient dust spikes well over 5.0 to 10.0 mg/m³.

However, as of 2026, Australia is implementing a strict, nationwide 0.5 mg/m³ Workplace Exposure Limit (WEL) for inhalable flour dust.

I am trying to understand what sort of engineering, material science, automation, etc breakthroughs have occurred over the last two decades to bridge this massive gap.