Appropriations in this title 1

or appropriations made under this title 1 in subsequent Energy and Water Development Appropriations Acts shall on and after October 2, 1992, be available for expenditure or transfer (within each bureau or office), with the approval of the Secretary, for the emergency reconstruction, replacement, or repair of aircraft, buildings, utilities or other facilities or equipment damaged, rendered inoperable, or destroyed by fire, flood, storm, drought, or other unavoidable causes: Provided, That no funds shall be made available under this authority until funds specifically made available to the Department of the Interior for emergencies shall have been exhausted.