PUBLIC LAWS-CHS. 410-413--JUNE 24, 1940 Excavations. Air navigation facil- ities. (3) The grantee shall not make any excavations that will prevent or at any tune unduly impede ingress and egress to the rest of the tract and, upon making any excavations, shall promptly restore the soil and surface of the land to its former condition; (4) Such other reasonable conditions as the Administrator in the Civil Aeronautics Authority may deem desirable for the purpose of preventing interference with the operation and maintenance of the air navigation facilities now or hereafter located upon such tract of land. Approved, June 24, 1940. [CHAPTER 411] AN ACT June 24, 1940 [s. 26111 Authorizing the purchase of a site and the erection of a building in the State of [Public, No. 649] Massachusetts for use as a radio-monitoring station, and for other purposes. Massachusetts. Purchaseofsite,etc., for radio-monitoring station. Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled, That the Federal Communications Commission be, and it is hereby, authorized to pur- chase for the United States a suitable site in the State of Massachu- setts provided a suitable site now owned by the Government is not available for the purpose, and cause to be erected thereon according to plans and specifications to be approved by it, a suitable building or buildings, for use as a radio-monitoring station, or to modify or reconstruct existing buildings or facilities on such site for such pur- pose, and to provide the necessary associated antenna systems, road- ways, power, water, and sanitary facilities, including the construction and installation of goniometric apparatus and including necessary outfits, apparatus, and equipment at a total cost of said site, buildings, and equipment of not to exceed $30,000. Approved, June 24, 1940. [CHAPTER 412] June 24,1940 AN ACT [S. 2983] To authorize the sale of lumber and other forest products obtained from the [Public, No. 650] forests on Indian reservations by Indian enterprises. reservati Be it enacted by the Senate and House of Representatives of the Sale of lumber, etc. United States of America in Congress assembled, That the lumber and other forest products produced by Indian enterprises from the forests on Indian reservations may be sold under such regulations as 41 U.S. the Secretary of the Interior may prescribe, without compliance with section 3709 of the Revised Statutes. Approved, June 24, 1940. June 24, 1940 [S. 2984] [Public, No. 651] Hayward Indian School, Hayward, Wis. Transfer of title to State. [CHAPTER 413] AN ACT Authorizing the transfer of title of the Hayward Indian School to the State of Wisconsin. Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled, That the Secretary of the Interior be, and he is hereby, authorized to transfer to the State of Wisconsin, upon such terms and in such manner as may be mutually agreed upon, for institutional or other public use title to all or any part of the property known and designated as the Hayward Indian chool, located at Hayward, Wisconsin. Approved, June 24, 1940. 504 [54 STAT.