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20 0 2年 1 2月 2 9日 ,爆破总方量 1 81万 m3、装炸药量 1 3 0 0 t的 A级大型爆破在河北迁安马兰庄镇孟家沟铁矿成功。这是近十年来我国工程爆破规模最大的一次 A级爆破 ,也是自建国以来我国的第 8次 A级大爆破工程。据有关专家透露 ,由于正在起草的《爆破安全规程》草案原则
A large-scale blasting of class A with an explosive volume of 1 810 000 m3 and a explosive explosive of 1 3 0 0 t was successful at Mengjiagou Iron Mine, Malanzhuang Town, Qian’an, Hebei Province on February 29, This is the largest A-level blasting in China’s engineering blasting in the past decade and also the 8th A-class blasting project in our country since its founding. According to experts, due to being drafted “blasting safety rules” draft principle