On December 1, 2020, the instrument platform of the 305-meter telescope at Arecibo Observatory in Puerto Rico fell, resulting in damage to the dish and surrounding facilities. To view the news release of the Observatory's 305-meter telescope collapse on December 1, 2020, visit https://go.usa.gov/xsmdV. The National Science Foundation (NSF), University of Central Florida, Arecibo Observatory, and a team of contractors immediately began emergency cleanup activities following the collapse to protect life and property and to enable safe operations at the facility. The below resources provide information about the protection of environmental and historic resources during this emergency cleanup effort. For additional updates on NSF's response to the Arecibo Observatory's 305-meter telescope collapse, please view the media page, https://www.nsf.gov/news/special_reports/arecibo.

The work being done at Arecibo Observatory was limited to emergency clean-up activities and ongoing research conducted at existing facilities. Future development at the Observatory will be considered at a later date.

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NSF Presentation to Puerto Rico's State Historic Preservation Office