A surgical mask is used inside the operating room or during other sterile procedure areas to protect the patient environment from contamination. Surgical masks have ties so that they can be adjusted for fit, and are tied over the top of a surgical or bouffant cap.
rockfall. 1  an act or instance of the falling of rock, as in a cave-in or an avalanche. 2  a mass of rocks that have fallen: to be trapped under a rockfall.
Bouldering is a form of rock climbing which takes place on boulders and other small rock formations, usually measuring less than 20 feet (6.1 m) from ground to top, but in some cases can measure up to 30+ ft.Unlike top rope climbing and lead climbing, no ropes are used to protect or aid the climber.ock climbing first emerged as a sport in the mid-1800s. Early records describe climbers engaging in what is now referred to as bouldering, not as a separate discipline, but as a form of training for larger ascents.