SECTION 1. BOUNDARIES OF FORT NECESSITY NATIONAL BATTLEFIELD.

    (a) Jumonville Glen Unit.--
            (1) Modification of battlefield boundaries.--The boundaries 
        of the Fort Necessity National Battlefield, Pennsylvania 
        (referred to in this Act as the ``Battlefield''), are modified 
        to include the area that comprises approximately 190 acres and 
        is generally depicted on the map entitled ``Boundary Expansion; 
        Jumonville Glen Unit, Fort Necessity National Battlefield'', 
        numbered DSC-336-20043A, and dated July 1991.
            (2) Public inspection of map.--The map referred to in 
        paragraph (1) shall be on file and available for public 
        inspection in the Office of the Director of the National Park 
        Service, Department of the Interior.
            (3) Modification of unit boundaries.--
                    (A) In general.--The Secretary of the Interior 
                (referred to in this Act as the ``Secretary'') may 
                modify the boundaries of the Jumonville Glen Unit of 
                the Battlefield as depicted on the map referred to in 
                paragraph (1) to exclude lands (not to exceed 2 acres) 
                on which are located principal structures actively used 
                by the owner of the structures as of July 1, 1991.
                    (B) Revision of map.--Following a modification in 
                accordance with subparagraph (A), the Secretary shall 
                prepare and make available for public inspection in 
                accordance with paragraph (2) a revised map of the 
                Jumonville Glen Unit.
    (b) Dunbar's Camp Area.--
            (1) In general.--Not later than 2 years after the date of 
        enactment of this Act, the Secretary, acting through the 
        Director of the National Park Service, shall--
                    (A) conduct such investigations of archaeological 
                sites in the vicinity of the Jumonville Glen Unit of 
                the Battlefield as are necessary to more precisely 
                locate and identify Dunbar's Camp; and
                    (B) submit a report containing the results of the 
                investigations to the Committee on Natural Resources of 
                the House of Representatives and the Committee on 
                Energy and Natural Resources of the Senate.
            (2) Further boundary modifications.--The Secretary may 
        modify the boundaries of the Jumonville Glen Unit of the 
        Battlefield to include such additional lands (not to exceed 30 
        acres) as are necessary to preserve and interpret the historic 
        resources associated with Dunbar's Camp.

SEC. 2. ACQUISITION OF LANDS.

    The Secretary of the Interior may acquire lands or interests in 
lands within the boundaries of the Battlefield by donation, purchase 
with donated or appropriated funds, or exchange.

SEC. 3. ADMINISTRATION.

    (a) In General.--The Secretary shall administer the Battlefield in 
accordance with the laws generally applicable to units of the national 
park system, including--
            (1) the Act entitled ``An Act to establish a National Park 
        Service, and for other purposes'', approved August 25, 1916 (16 
        U.S.C. 1 et seq.); and
            (2) the Act entitled ``An Act to provide for the 
        preservation of historic American sites, buildings, objects, 
        and antiquities of national significance, and for other 
        purposes'', approved August 21, 1935 (16 U.S.C. 461 et seq.).
    (b) Preservation and Interpretation of Historic Resources.--In 
administering the Battlefield, the Secretary shall take such action as 
is necessary to preserve and interpret the historic resources 
associated with--
            (1) the social and military history of the European and 
        Native American contests for North America;
            (2) the social, political, and economic history of the 
        westward expansion of the American frontier; and
            (3) the social, political, and economic history of the 
        early National Period of the United States.

SEC. 4. COOPERATIVE AGREEMENTS.

    (a) In General.--In accordance with subsection (b), the Secretary 
shall enter into cooperative agreements with those landowners in 
Fayette County, Pennsylvania, whose activities on their properties 
could have harmful effects on the Battlefield, the resources within the 
Battlefield, and the enjoyment of visitors to the Battlefield.
    (b) Assistance.--A cooperative agreement shall be entered into 
pursuant to subsection (a) in order to prevent the harmful effects 
described in subsection (a) through technical assistance, land use 
agreements, or such other means as are agreed upon by the Secretary and 
the landowner.
    (c) Expenditure of Funds.--The Secretary, acting through the 
Director of the National Park Service, may expend Federal funds to 
carry out cooperative agreements entered into pursuant to subsection 
(a).

SEC. 5. TECHNICAL CORRECTION.

    The Act entitled ``An Act to provide for the commemoration of the 
Battle of Fort Necessity, Pennsylvania'', approved March 4, 1931 (46 
Stat. 1522), is amended by striking ``1757'' and inserting ``1754''.
Expands the boundaries of Fort Necessity National Battlefield, Pennsylvania, to include the Boundary Expansion, Jumonville Glen Unit, Fort Necessity National Battlefield. 
Authorizes the Secretary of the Interior to modify the boundaries of the Jumonville Glen Unit (the Unit) to exclude lands (not to exceed two acres) on which principal structures are located that are actively used by the owner as of July 1, 1991. 
Directs the Secretary, acting through the Director of the National Park Service, to investigate and report to specified congressional committees on archaeological sites in the vicinity of the Unit in order to locate and identify Dunbar's Camp.  Authorizes the Secretary to further modify the boundaries of such Unit (to include additional lands within the battlefield, but not to exceed 30 acres), if necessary to preserve and interpret historic resources associated with the Camp.
To expand the Fort Necessity National Battlefield, and for other purposes.