Hazard analysis and dust control

In feed mills, dust should be controlled to safeguard the health of the employees and the environment and to prevent dust explosions. So what is dust exactly? The dust with a particle size of less than 10μm, usually floating in the air due to wind power is called floating dust. The dust with a particle size of over 10μm, that easily sinks, is called sinkable dust. The international standardisation organisation states that the suspension of particles with size of less than 75μm is called dust