For planning, acquisition of sites and construction of

16 new facilities; purchase and acquisition of facilities and re-

17 modeling, and equipping of such facilities for penal and

18 correctional use, including all necessary expenses incident

19 thereto, by contract or force account; and constructing, re-

20 modeling, and equipping necessary buildings and facilities

21 at existing penal and correctional institutions, including

22 all necessary expenses incident thereto, by contract or force

23 account, $161,571,000, to remain available until expended:

24 Provided, That labor of United States prisoners may be

25 used for work performed under this appropriation.