In 2021, Australian operations continued stringent COVID-19 controls to ensure a safe operation was maintained and compliance with government regulations. The management of COVID-19 continued to present challenges as Australia transitioned from a zero-COVID-19 strategy to living with COVID-19 in late 2021. Our operational response was managed via our COVID-19 Trigger Action Response Plan which was developed in consultation with our appointed medical advisor to align with Queensland Health requirements.
Social distancing, mask wearing, limiting personnel numbers in vehicles, and a mine site access approval process were some of the controls applied to reduce the operations exposure to COVID-19 during 2021. As domestic borders reopened in late 2021 community transmission increased. Site management plans, worker education and vaccination programs, implemented in advance, ensured that the risk to the workforce remained low. Coronado remains committed to promoting vaccination to the Curragh workforce through COVID-19 education, promotion of local government vaccination clinics and targeted vaccination and booster clinics for employees and contractors within our accommodation facilities.
In 2021 the U.S. operations maintained policies to protect employees from the virus. This included a no visitor policy; restricted travel; staggered start/stop times for mining shifts in order to reduce the number of miners present at one time; and masking while in bathhouses, close proximity underground transportation and elevators. Temperature screenings were also undertaken at each entrance to our property. These measures were implemented and removed during the year, based on local infection rates and Government guidelines. The COVID-19 Steering Committee met frequently through the year as needed to address the changing conditions locally.