PUBLIC LAWS-CH. 298-JUNE 28,1944 nance, and repair of necessary camp buildings and mining structures and appurtenances; including not to exceed $62,000 for personal serv- ices in the District of Columbia; purchase (not to exceed $6,000), operation, maintenance, and repair of motor-propelled passenger- carrying vehicles; professional books and publications; printing and binding; purchase of such wearing apparel and equipment as may be required for the protection of employees while engaged in their work; and other items otherwise properly chargeable to the appropriation Ante, p.. "Contingent expenses, Department of the Interior", $1,860,000, of which $317,000 (including not to exceed $22,000 for personal services in the District of Columbia) shall be made available to the Geological Survey to carry out the purposes of this appropriation. pantsud rseach Magnesium pilot plants and research (national defense): For all u.41 . C.15. necessary expenses, without regard to section 3709 of the Revised Statutes, for the conduct of investigations and development of methods for the recovery of magnesium from domestic raw materials, including naturally occurring brines, salt deposits, dolomite, mag- nesite, and brucite, by hydrometallurgy, direct reduction, and elec- trolytic methods, including laboratory research; maintenance and operation of pilot plants; procurement of necessary materials and ores for metallurgical tests; purchase or lease of land; construction and equipment of buildings to house pilot plants, including not to exceed $30,000 for temporary employment of engineers, architects, or firms, or corporations thereof, by contract or otherwise, without regard to the civil-service and classification laws necessary to design and construct the buildings and pilot plants; supplies and equipment; travel expenses; not to exceed $15,500 for personal services in the District of Columbia; not to exceed $750 for printing and binding; purchase in the District of Columbia and elsewhere of other items otherwise properly chargeable to the appropriation "Contingent AuZt, p. 46 . expenses, Department of the Interior"; books of reference and peri- odicals; special wearing apparel and equipment for protection of employees while employed; and the operation, maintenance, and repair of three passenger-carrying automobiles; $600,000: Provided, ontrbutons That the Secretary, through the Director of the Bureau of Mines, is authorized to accept buildings, equipment, and other contributions from public or private sources for the purposes hereof, and to operate said plants in cooperation with other agencies, Federal, State, or private. ponveso t igtito n of de Investigation of deposits of critical and essential minerals in the essentialminerals. United States and its possessions (national defense): For all neces- 41U.S.C. sary expenses, without regard to section 3709 of the Revised Statutes, for investigating deposits of critical and essential minerals in the United States and its possessions, including laboratory research; pre- liminary examination and surface and subsurface exploration; sup- plies and equipment; travel expenses; not to exceed $75,000 for per- sonal services in the District of Columbia; not to exceed $3,000 for printing and binding; purchase in the District of Columbia and else- Ante, p.4. where of other items otherwise properly chargeable to the appropria- tion "Contingent expenses, Department of the Interior"; books of reference and periodicals; purchase not to exceed $8,300, operation, maintenance, and repair of passenger-carrying automobiles; special Contriution. wearing apparel and equipment for the protection of employees while employed; $2,900,000: Provided, That the Secretary, through the Director of the Bureau of Mines, is authorized to accept lands, build- ings, equipment, and other contributions from public or private sources for the purposes hereof, and to carry out the projects in cooperation with other agencies, Federal, State, or private. 498 [58 STAT.
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