1957年6月，武汉通用机器厂（后改名武汉柴油机厂）制成中国第一台手扶拖拉机 Source
China’s first self-made hand tractor in 1957
Beijing steel workers study Chinese after work in 1950
石景山钢铁厂 Source
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A collection: Capital Steel in 1969
Beijing Source
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张仃, 石景山钢铁厂, circa 1970s
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张仃, 鞍钢, 1970s
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宋惠民，钢锭, 1961
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宋惠民,钢城一角之二， 1961
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Military engineers perform emergency repairs on the Tangshan Steel Plant in 1976
After the earthquake Tangshan, Hebei Source
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Liu Shaoqi inspects the Maanshan Iron and Steel Plant in 1958
Anhui October 1958 Source
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宋惠民,火红的岁月， 1961
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Everyday Life in Mao's China 