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青岛砖厂是一个有三十多年历史的老厂,位于市郊,因土源枯竭,粘土砖产量逐年下降。六七年开始利用工厂附近山丘所蕴藏的大量风化砂岩生产碳化灰砂砖。七一年,党委发动群众认真总结经验,大搞科学实验,遵照毛主席“实践出真知”的教导,又试验成功用蒸养法生产灰砂砖。
The Qingdao brick factory is an old factory with a history of more than 30 years. It is located in the outskirts of the city. Due to the depletion of land resources, the output of clay bricks has declined year by year. In 1967, the use of a large number of weathered sandstones in the hills near the factory produced the production of cement sand bricks. In 1971, the party committee mobilized the masses to earnestly sum up experience, carried out scientific experiments, and followed Chairman Mao’s teachings of “experiencing authentic knowledge”, and successfully tested the production of sand-lime bricks by steam curing.