Yosemite Trail Crew will be blasting on the south side of the Mirror Lake trail below Ahwiyah Pt. on Wednesday October 3 , 2012. We will be performing 2 separate blasts and will be closing the area from 6:00 AM until approximately 2:30 PM. This part of the trail is currently closed to entry due to trail reconstruction and rockfall hazard. We will slightly expand the closure to 1,000 feet beyond the rock fall area for the day of our blasts. The area of the trail on the North side of Mirror Lake directly across from the blast will be closed briefly during the initiation of the two blasts. Other than a brief noise, there should little impact to park visitors from this work. We plan to initiate the two blasts at 11:00 AM and 2:00 PM.