PUBLIC LAWS-CH. 529-JULY 1, 1946 Amount available. Cooperation with States. Limitation. 38 Stat. 742; 40 Stat. 297; 41 Stat. 437, 1363. Pot, p. 9SO. thereto in excess of such an amount as is necessary for the Geological Survey to perform its share of standard topographic surveys, such share of the Geological Survey in no case exceeding 50 per centum of the cost of the survey: Providedfurther, That $400,000 of this amount shall be available only for such cooperation with States or munici- palities; Geologic surveys: For geologic surveys in the United States and chemical and physical researches relative thereto, $2,000,000, of which not to exceed $500,000 may be expended for personal services in the District of Columbia; Mineral resources of Alaska: For investigation of the mineral resources of Alaska, $200,000, to be available immediately, of which not to exceed $65,000 may be expended for personal services in the District of Columbia; Gaging streams: For gaging streams and determining the water supply of the United States, its Territories and possessions, investigat- ing underground currents and artesian wells and methods of utilizing the water resources, $2,498,672, of which not to exceed $10,000 may be expended for acquiring lands at gaging stations, and not to exceed $235,000 may be expended for personal services in the District of Columbia: Provided, That no part of this appropriation shall be expended in cooperation with States or municipalities except upon the basis of the State or municipality bearing all of the expense incident thereto in excess of such an amount as is necessary for the Geological Survey to perform its share of general water resource investigations, such share of the Geological Survey in no case exceeding 50 per centum of the cost of the investigation: Provided further, That $1,620,000 of this amount shall be available only for such cooperation with States or municipalities: Providedfurther, That no part of the funds appro- priated in this paragraph shall be used for the drilling of water wells for the purpose of supplying water for domestic use; Classification of lands: For the examination and classification of lands with respect to mineral character and water resources as required by the public land laws and for related administrative operations; for the preparation and publication of mineral-land classification and water-resources maps and reports; for engineering supervision of power permits and grants under the jurisdiction of the Secretary; and for performance of work for the Federal Power Commission, $275,000, of which not to exceed $69,000 may be expended for personal services in the District of Columbia; Printing and binding, and so forth: For printing and binding, including the purchase of reprints of scientific and technical articles published in periodicals and journals, $110,000; for preparation of illustrations, $32,030; and for engraving and printing geologic and topographic maps, $300,000; in all, $442,030; Mineral leasing: For the enforcement of the provisions of the Acts of October 20,1914 (48 U. S. C . 435), October 2, 1917 (30 U. S . C . 141), February 25, 1920 (30 U. S . C. 181), as amended, and March 4, 1921 (48 U. S. C. 444), and other Acts relating to the mining and recovery of minerals on Indian and public lands and naval petroleum reserves, and for necessary related operations; and for every expense incident thereto, including supplies, equipment, travel, the construction, main- tenance, and repair of necessary camp buildings and appurtenances thereto, $625,000, of which not to exceed $75,000 may be expended for personal services in the District of Columbia; Cooperative advance: To enable the Geological Survey to meet obli- gations incurred by it arising from cooperative work pending reim- bursement from cooperating agencies; $400,000, which amount shall 370 [60 STAT.