From 4/9, from 8 am to 12 pm, facilities technicians will be making repairs to the HVAC and electrical systems inside the 11th-floor ABL. During this time, all work in the ABL will not be allowed for the duration of the outage. No ABL laboratory work should be started, and any work in progress should be planned so it can be completed or safely stopped prior to the outage. Researchers should not enter ABL spaces for work during this period.