1.   Yosemite air blasts are much rarer than large landslides, he noted.

2.   Air horn blast.

3.   Just push the button, and usually the air blast will dislodge any pesky particles.

4.   The air blast blew through a Forest Service campground.

5.   The air blast was so severe that a volcano expert from Washington state visited Yosemite to survey the damage.

6.   Then the brittle, almost papery inner shells are cracked and separated, in part using air blasts and suction.

7.   Walker was in charge of measuring air blast with Piezo electric gauges.