上海南市煤渣砖厂广大职工,遵照了伟大领袖和导师毛主席关于“综合利用大有文章可做”的教导,调查研究,寻找废渣搞试验。他们发现上海铁锅厂的化铁炉里冒出来的灰(炉冒灰),没有充分利用。他们取 Shanghai Nantong cinder brick factory workers, in accordance with the great leader and mentor Chairman Mao on “comprehensive utilization of a lot of articles to do,” the teaching and research, looking for waste to engage in experiments. They found that the ash (stove ash) coming out of the iron furnace at Shanghai Ironworks did not make full use of it. They take it