Wuhan, Hubei Source
A collection: At work at Wuhan Iron and Steel in 1959
A mechanic at work in Wuhan in 1959
Wuhan, Hubei Source
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A bike building competition in 1959
1959年7月8日，北京市财贸职工业务技术表演大会在中山公园音乐堂开幕。宣武区大栅栏自行车商店职工刘继先（左）和崇文门前门大街自行车商店职工刘国义，在会上表演安装自行车，他俩都是选拔出的技术能手。刘国义只用了5分41秒就装成一辆自行车。新华社稿 Source
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洪瑞麟, 矿工, 1954
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An improvised railroad cart from 1960
四川江北 Source
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Parading Tractors for the Nation’s Birthday in Downtown Chengdu, 1958
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A collection: China helps build the Tanzania Railway 1968-1975
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Canada holds a trade exhibition in Beijing in 1972
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谢瑞阶, 黄山三门峡地质勘测工程（局部), 1955
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Wu Zuoren paints Sanmenxia 1955-1956
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Everyday Life in Mao's China 