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Show 7 - Frenchman's Creek Alterations This work was done for the Engineering and Water Supply Department of South Australia and was located at Frenchman's Creek, South Australia. The project was to straighten and enlarge 14 miles of Frenchman's Creek, part of the Murray River System which serves the rich irrigation districts in the three states, and control flood waters of the Murray River at Lake Victoria. In all, 3, 000, 000 cubic yards of earth were removed to complete the project. In September, 1957, a record 232, 000 cubic yards of earth were moved with a big 6-cubic yard dragline. Despite the unprecedented floods of 1956 which halted work for six months, the job was completed well within the required time. 8 - Railroad Tunnel and Lining in California for the Western Pacific Railroad Company in the amount of $1,865,000. 9 - Recondition and Line in California for the Western Pacific Railroad Company in the amount of $586,000. 10 - Die Casting Plant in Texas for the American Smelting and Refining Company in the amount of $180,000. 11 - Salt Plant Rehabilitation in Utah for Bonneville, Ltd. in the amount of $535, 000. 12 - Pima Mining Copper Plant in Arizona for the Pima Mining Company in the amount of $5,450,000. A brief history of Pima follows: The Pima ore body was the first base metal deposit of any magnitude in the western U. S. to be located by geophysical methods. Under the guidance of Herbert Hoover, Jr. , who was then President of United Geophysical Corporation, Robert Thurmond and Walter Heinrichs exploration engineers for UGC -- made their first discovery in this area in 1950, using equipment primarily designed for use in exploration for buried mineral deposits. Subsequent preliminary drilling indicated a deposit of medium soze and grade which could be worked by underground methods. In January 1952 an underground development program was initiated and carried on until approximately the middle of 1954. During the latter phase of this program, it became apparent that the medium size high grade ore body could be more economically exploited if |
