Monthly Archives: April 2013

Overburden Blast – Blasting During Low Wind Conditions

Overburden Blast – Blasting During Low Wind Conditions

Wind Speed during a blast will significantly increase the movement of the the dust particles below a D50 of 30 Micron. Other factors will be the temperature and the humidity during the blast so time of day for the blasting is also an important variable to consider.

Blast Design also Makes a difference to Dust Dispersion

Blast Design also Makes a difference to Dust Dispersion

The design of the blast is another variable to consider as the height that material is lifted into the air from the blast will significantly impact on the amount of dust liberated into the atmosphere. This just will settle in the surrounding environment.

Numerous Blasts under Different Conditions

Numerous Blasts under Different Conditions

Blasting in high wind conditions and also when the ground is dry is going to result in significantly more dust being liberated into the atmosphere than when the wind speed is low and the ground damp. Ideally blasting should be done after rainfall, while taking into account any other complications with blasting in damp material.

Mine Blast 60m From Digger – Dust Movement during a blast

Mine Blast 60m From Digger – Dust Movement during a blast