0236 - People Work For Four Modernizations. Cao Shenbo, deputy head of the ...Back

People Work For Four Modernizations. Cao Shenbo, deputy head of the research institute of the Shanghai Machine Tools Plant, is a worker-turned engineer. He received only primary-school education, but he has attained the level of a university student and made contributions in the research of grinding machines. Photo shows Cao Shenbo and his fellow engineer inspecting a high speed circular grinding machine of their own designing. The cutting speed of the machine reaches 80 metres per second. Photo by Yang Putao