1984年11月23日凌晨三点半钟,马钢一钢厂原料车间甲班备完一炉废钢料后,班内其他人员均乘工作间隙时间进入休息室。这时大组长、老工人闵自春根据自己的安全职责,对炉前平台的废钢槽逐个进行检查。当检查到第四个料槽时,发现其中有个长50厘米、直径122毫米的圆长形物,重约20公 At half past three on the morning of November 23, 1984, after a furnace of scrap steel was prepared in the raw materials workshop of the Masteel, the rest of the class entered the lounge through the working gap. At this time, the leader of the group and the old worker Min Zichun inspected the waste slots of the platform in front of the stove according to their own safety responsibilities. When the fourth trough was examined, it was found that there was a round-shaped object 50 cm long and 122 mm in diameter weighing about 20 km