During the Third Front construction in China’s interior, many plants were built as sanbian gongcheng, “three-side projects.” Survey, design and construction went on at the same time: bian kance, bian sheji, bian shigong.
According to the news site The Paper, the method caused serious problems of quality and safety. One plant for aircraft parts in Shaanxi was built without knowing the geology. A large landslide followed, with losses of more than 10 million yuan.