DIA CONSULTANTS CO., Ltd. is a major consulting company in the fields of natural resources exploration, civil engineering, disaster prevention, and construction, with an experienced staff of highly trained engineers, geophysicists, geologists and civil engineers. Since 1963 DIA CONSULTANTS has steadily grown into a widely respected civil engineering consulting firm with a technical staff of 363, including 229 government-licensed engineers and scientists. Numerous clients in Japan and in countries worldwide have used DIA CONSULTANTS for a wide range of professional services. The sophisticated hardware and software in our Technical Laboratory and Data Processing Center are continually updated to meet the changing demands of global engineering projects. Our state-of-the-art expertise is maintained by ongoing research and development to meet the ever-changing spectrum of engineering needs.