Some footage from a windy day at the local open pit where the dust was getting enough hang time between trips that it remained constant. Likely more then a bit of silt in the filters this day. http://www.youtube.com/watch?v=KLkeKHLfNzo
Yair . . . That is a lot of dust for a haul road . . . where's the water truck? In the real scheme of things it bugger all. On rig shifts and working dozers in mulga country air cleaners sometimes won't last half a day before they're pulling red. Cheers