The dust from a mine is significantly different from the dust you find in your home. Dust in your home primarily consists of dead skin while mine dust is almost exclusively a mineral in a fine powder form.
Most written definitions of mine dust include the following: dust from drilling, blasting, smashing or handling of rock. The majority of the dust created by one of these activities are too large to stay in the air for an extended period of time and account for about 40 percent of all dust created at a mine site. The remainder is less than 10 micrometers in size. The majority of these particles is less than 2.5 micrometers and come from the exhaust of equipment used on the mining site.
The smallest size particle is what is most hazardous to the population's health. The larger dust particles are an eye sore and are cost a lot to clean up, but are less hazardous to one's health.
The smaller particles do make certain health hazards that include respiratory problems due to the fact that they are in the air that is breathed in to the lungs. This can be minimized if mining personnel were to wear masks designed to filter out the dust.
Another way dust can be decreased on the mining site is with the use of a dust suppression system. This is where water is sprayed over piles of rocks and the ground, particularly in the loading areas. These particles will be absorbed by the water thus become too heavy to stay in the air and eventually drop back onto the ground from which they came
The large trucks that are used in the mining area are also responsible for kicking up a great deal of dust, but most of that is fugitive dust from the ground soil and not the mine dust.