唐山市滦州区宋各庄人民公社炼铁厂发动群众,通过大鸣大放大辩论,算了三笔帐:第一笔,每个工人每天拣回半斤碎铁,全厂一月可拣回生铁二吨多;第二笔,全厂三台投入生产的柴油机,平均每天节省30斤油,一年可节省 Tangshan Luanzhou Songgezhuang People’s Commune Ironworks mobilize the masses, through the big debate, enumerated three accounts: The first one, each worker picked half a catty of iron every day, the whole plant in January to pick Recycled iron two tons; the second pen, the whole plant three into the production of diesel engines, save an average of 30 pounds of oil a day, a year can be saved