The air inhaled by the breathing team has a cleaning effect. Please analyze why quarry workers get systemic lung disease and their work is urgent.

This problem has its own problems. The respiratory tract only filters the inhaled air in the nasal cavity.

And that particle size of the filter particle is very large, usually larger than 20-50 micron,

But it didn't filter to the upper respiratory tract until deep in the lungs.

Quarrying workers' workplaces are exposed to high concentration dust for a long time.

If the dust particles are smaller than 20 microns, a large number will enter the respiratory tract.

If you breathe through your mouth because of a stuffy nose, the dust intake is extremely high.

So it is easy to get lung diseases, such as chronic obstructive pneumonia.

Wear a high-density dust mask at work to protect your ears and eyes to some extent.