1995年2月6日,山东莱芜粉末冶金厂第三条隧道窑(三号窑)正式点火投产。三号窑全长69m,总投资220万元,1994年10月25日动工,当时面临任务重、工期短、天气寒冷等许多困难,该厂吸取建造前两座54m隧道窑的成功经验,科学安排、精心施工,既保质量、又抢工期,在短短100天内确保工程按期峻工,准时点火,创造了该厂建设史上的奇迹。 February 6, 1995, Shandong Laiwu Powder Metallurgy Plant third tunnel kiln (No. 3 kiln) officially put into operation. The third kiln, with a total investment of 2.2 million yuan and a total investment of 2.2 million yuan, started on October 25, 1994. At that time, it faced many difficulties such as heavy tasks, short construction period and cold weather. Taking advantage of the successful experience of the first 54 m tunnel kilns before construction, Arrangements, meticulous construction, both to ensure quality, but also grab the construction period, in just 100 days to ensure that the project completed on time, on time ignition, creating a miracle in the plant construction history.