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Mr. and Mrs. Ripley pose in front of memorial plaque: "Cable Tool Drilling Rig--This authentic reconstruction of a cable-tool drilling rig such as was used by Kern County operators at the turn of the century, is emblematic of the ingeniuty of American enterprise. It is also a memorial to those pioneers who, by logic and application, overcame the problems of their time, and gave strength and stability to a great and growing institution. Petroleum is one of the world's most valuable resources. By modern processes it is transformed into endless commodities that add to the convenience and comfort of mankind. It has brought immeasurable benefit to the citizens and industries of the San Joaquin Valley. This cable-tool rig very fittingly represents an important era in the evolution of oilwell drilling techniques and hence, an equally important era in the history of Kern County. Dedicated May 4, 1957, Petroleum Production Pioneers, Kern County Museum Oil Committee, Kern County Board of Supervisors.Located at the Kern County Museum. From the collection of Frederic Chandler Ripley, Jr.