自从全党全民办工业以来,中小型矿山日益增多,爆破使用的炸药量大大增加,因而出现了炸药供应紧张的现象。为了解决这一问题,在原料缺乏的情况下,炸药制造部门采用了大量的代用品,这虽解决了部分供应的困难,但对炸药的质量有所影响。1958年9月份曾由某厂购入一批硝酸炸药,由于缺乏TNT,而掺入了20％的食盐,且包装也不好。因而爆力小、防水性差。经试验,其殉爆距离小于40公厘,猛度也 Since the whole party has run the private industry, the number of small and medium sized mines has increased. The amount of explosives used in blasting has increased greatly. As a result, the supply of explosives has become tense. In order to solve this problem, in the absence of raw materials, the explosives manufacturing department adopted a large number of substitutes, which solved some of the supply difficulties, but had an impact on the quality of explosives. In September 1958, a batch of nitric acid explosives was purchased from a factory. Due to the lack of TNT, 20% salt was incorporated and the packaging was not good. Therefore, the detonation force is small and the water resistance is poor. After testing, the blasting distance is less than 40mm