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交通部第一公路工程局1965年在石方爆破中,推广了铵油炸药代替硝铵炸药的先进经验。但是,用铵油炸药爆破,仍需硝铵炸药起爆。从二处施工情况来看,放大、中炮,硝铵炸药尚可控制在10％上下,而小炮却需用更多。因此,硝铵炸药用量还是很大,并且到处超过计划。硝铵炸药超耗,成为生产上的一大难题。超耗的数字,象块石头压在材科员刘启发的心上。他想,一个材料员应该时时想到国家,处处替国家算帐,硝铵炸药比铵油炸药贵
In 1965, the First Highway Engineering Bureau of the Ministry of Communications promoted the advanced experience of replacing ammonium nitrate explosives with ammonium oil explosives in stone blasting. However, explosives with ammonium oil explosives, ammonium nitrate explosives still need to detonate. From the two construction situation, the amplification, the gun, ammonium nitrate explosives can still be controlled at 10% up and down, but the gun needs more. Therefore, the amount of ammonium nitrate explosives is still very large, and everywhere than the plan. Ammonium nitrate explosive consumption, a production of a major problem. Expensive figures, like the stone pressure in the material section of the heart of Liu inspired. He thought that a material worker should think of the country from time to time and always account for the country. Ammonium nitrate explosives are more expensive than ammonium explosives