75TH CONG. , 3 D SESS.-CH. 187-MAY 9, 193S contract with civilian aerial photographic concerns for the furnish- ing of such photographs; Appropriations herein made, and funds transferred thereto, shall be available for payment of the costs of packing, crating, and trans- portation (including drayage) of personal effects of employees upon permanent change of station, under regulations to be prescribed by the Secretary of the Interior; Total, United States Geological Survey, $3,164,680. BUREAU OF MINES SALARIES AND GENERAL EXPENSES Salaries and general expenses: For general expenses, including pay of the Director and necessary assistants, clerks, and other employees, in the office in the District of Columbia and in the field, and every other expense requisite for and incident to the general work of the Bureau in the District of Columbia and in the field, to be expended under the direction of the Secretary of the Interior, $64,000, of which amount not to exceed $52,000 may be expended for personal services in the District of Columbia. Operating mine rescue cars and stations and investigation of mine accidents: For the investigation and improvement of mine-rescue and first-aid methods and appliances and the teaching of mine safety, rescue, and first-aid methods; investigations as to the causes of mine explosions, causes of falls of roof and coal, methods of mining, espe- cially in relation to the safety of miners, the appliances best adapted to prevent accidents, the possible improvement of conditions under which mining operations are carried on, the use of explosives and electricity, the prevention of accidents, statistical studies and reports relating to mine accidents, and other inquiries and technologic investi- gations pertinent to the mining industry; the exchange in part pay- ment for operation, maintenance, and repair of mine-rescue trucks; the construction of temporary structures and the repair, maintenance, and operation of mine-rescue cars and the Government-owned mine- rescue stations and appurtenances thereto; personal services, traveling expenses and subsistence, equipment, and supplies; travel and sub- sistence, and other incidental expenses of employees in attendance at meetings and conferences held for the purpose of promoting safety and health in the mining and allied industries; purchase not exceed- ing $6,000, exchange as part payment for, operation, maintenance, and repair of motor-propelled passenger-carrying vehicles for official use in field work; purchase a nd exchange in part payment therefor of cooks' uniforms, goggles, gloves, rubber boots, aprons, and such other articles or equipment as may be necessary in connection with the purposes of this paragraph; including not to exceed $67,100 for per- sonal services in the District of Columbia, $635,000: Provided, That of this amount not to exceed $500 may be expended for the purchase and bestowal of trophies in connection with mine-rescue and first-aid contests; Testing fuel: To conduct inquiries and scientific and technologic investigations concerning the mining, preparation, treatment, and use of mineral fuels, and for investigation of mineral fuels belonging to or for the use of the United States, with a view to their most efficient utilization; to recommend to various departments such changes in selection and use of fuel as may result in greater economy, and upon request of the Director of the Bureau of the Budget, to investigate the fuel-burning equipment in use by or proposed for any of the departments, establishments, or institutions of the United Transportation of effects of employees. Bureau of Mines. Salaries and gen- eral expenses. Mine rescue cars and stations. Investigation of ac- cidents, etc. Attendance at meet- ings, etc. Vehicles. Proiso. Trophies, mine- rescue, etc., contests. Testing fuel. 52 STAT. ] 327
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