Unalaska's first responders briefly closed Henry Swanson Drive Tuesday night when a vessel at the Carl E. Moses Boat Harbor reported an ammonia leak.
The Department of Public Safety contained the leak from a tank on the F/V Aleutian Sable and reopened the road by 8:20 p.m., within an hour of the initial closure.
Officials say two people were treated for minor injuries related to the "short" ammonia release.