Report issued by the Bureau of Mines discussing the mechanical equipment used in oil and gas wells of the Oklahoma City field. As stated in the introduction, "this paper presents the results of a study devoted chiefly to new equipment that has been developed to meet the requirements of drilling and producing operations in the Oklahoma City field and that has been accepted by drilling contractors and operators" (p. 1). This report includes tables, illustrations, and photographs.

CONTENTS 1. Board of directors and officers for 1934. 2. Committees for the year 1934. 3. Minutes of the year 1934. 4. Financial statements for period covered by Jan. 1, 1934, to Nov. 1, 1934. 5. Annual financial statement for period covered by Jan. 1, 1934 to Dec. 31, 1934 6. 1934 report of activities. 7. 1933 report of activities.