How much dust is too much dust?
Like at what point do you put on your respirator and is being completely dusted out to the point you can't see where your going in your CAT LHD normal? For reference this is an underground mine.
Like at what point do you put on your respirator and is being completely dusted out to the point you can't see where your going in your CAT LHD normal? For reference this is an underground mine.