Details of exploration geophysics instruments and techniques in the People's Republic of China are relatively unknown to those outside the country. The People's Republic, a country the size of the United States, with relatively large mineral and petroleum resources, since its founding in 1949, has conducted more or less continuous geophysical exploration by vast teams of geologic and geophysical personnel.

In 1974 and 1977, the writer visited exploration geophysical personnel in the People's Republic of China; the latter visit was at the invitation and expense of the State Bureau of Geology. During each 3-week visit, various laboratories, institutions, geophysical instrument factories, computer centers, and other technical installations were visited. Included in these facilities were the large Ta Ching oil field in Manchuria; the geophysical instrument factories in Peking, Shanghai, and Changchung; the Geological College in Changchung; and various State Bureau of Geology personnel in other cities. During these visits the writer compared the state of exploration geophysics, associated technology, and current activities with present geophysical practice in the United States and other West rn countries.

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