VAcknowledgments 
 The Bureau of Mines, in preparing this volume, utilized extensively statistical
and other basic data on mineral production, consumption, and trade provided
by various foreign government mineral and statistical agencies through a
variety of official publications. The cooperation and assistance of these
agencies is gratefully acknowledged. Statistical and informational material
was also obtained from airgrams of the U.S. Department of State, from United
Nations publications, and from the domestic and foreign technical and trade
press. Of particular help in preparing this volume were the routine and special
reports submitted by the minerals, petroleum, economic, and commercial officers
and other members of the Department of State. Their contributions are sincerely
appreciated. 
 The text and tables of this volume were prepared by the staff of the Branch
of Foreign Data, Division of Production/Consumption Data Collection and Interpretation.
Final correlation and checking of this volume were performed by the Branch
of Publication Support Services of the Division of Publication. 
 The regimes of some countries reviewed in this volume are not recognized
by the U.S. Government. The information contained herein is technical and
statistical in nature and is not construed as conflicting with or being contradictory
of U.S. policies toward these countries. 
 
Albert E. Schreck, Editor-in-Chief