Update from LHO on Hanford DOE Alert

News Release • May 10, 2017

LIGO Hanford Observatory (LHO) resumed full operations on Wednesday May 10th, 2017, with all staff and visitors reporting to the site.  The Hanford DOE Advisory (http://www.hanford.gov/c.cfm/advisory/) cleared workers to report to locations south of the Wye Barricade, which includes LHO.

News Release • May 09, 2017

Today, the PUREX facility of the U.S. Department of Energy (DOE) Hanford Site experienced a cave-in of a 20-foot section of tunnel that houses contaminated materials. The LIGO Hanford Observatory (LHO) has released non-essential personnel for the day, following a DOE-issued recommendation (http://www.hanford.gov/c.cfm/eoc/?page=290). LHO staff sheltered in-place for part of the morning, as advised by the DOE. DOE crews have not detected airborne contamination.

While LHO is currently in its second observation run searching for sources of gravitational waves, a planned optic maintenance activity underway this week has temporarily halted active observations.  A small crew will continue this optic work throughout the day. Staff safety is our highest priority, so this status may change as additional information becomes available.

Visit the DOE site (http://www.hanford.gov/c.cfm/eoc/?page=290) for updates.