Controlled blasting will continue at the South Shaft on Friday, June 19th. Depending on conditions and need, a blast may also take place at the North Shaft.
All indicators for vibration, noise and air particulates are below the thresholds and are measured constantly.
Controlled blasting can take place between 7am and 6pm Monday through Friday. All safety and noise control measures are in effect and the work is performed in accordance with California Occupational Safety and Health (OSHA) and environmental regulations.