在毛主席“开发矿业”“自力更生,艰苦奋斗”的伟大方针指引下,赤马山铜矿和北京矿冶研究院于1966～1971年间,在赤马山铜矿进行了冲击式破碎机的工业试验。试验结果表明,冲击式破碎机基本上能用于冶金工业;对于中小矿山的迅速上马,创造了良好条件。 Under the great guideline of “developing the mining industry” and “self-reliance and arduous struggle”, Chairman Mao Zedongshan Copper Mine and Beijing Mining and Metallurgy Research Institute carried out the industry of impact crusher at the Copper Mine in Red Mountain during 1966-1971 test. The test results show that the impact crusher can basically be used in the metallurgical industry; for medium and small mines quickly launched, and created good conditions.