United States Civil Service Commission announces examination for mineral specialist $5,000 to $10,250 per year (grades GS-5 through GS-12), fields, solid fuels, foreign minerals, minerals (general), metals, nonmetals, petroleum and natural gas, apply to Executive Secretary, Board of U.S. Civil Service Examiners, Bureau of Mines, Department of Interior, Washington. D.C. 20240, announcement 350-B.