I suggest not to go, regardless of the unit. I also majored in metallurgical engineering. My major is nonferrous metal smelting. Our internship is in Baoji Dongling Group. One month after the internship, more than 300 children were reported on the news. In fact, there are widespread problems in lead and zinc smelting in China, which is inevitable in this industry, especially in lead and zinc smelting. Our teacher said that the state had not investigated it, and if it did, it would be illegal to exceed the standard. This is mainly caused by lack of technology. So I suggest you don't go to lead and zinc smelting. There are only two or three lead and zinc smelting units in our class. To tell the truth, my friend, I suggest you go to a copper smelter (the harm of copper is not clear) or aluminum smelter (electrolytic aluminum is actually very harmful), which are better than lead and zinc. I am now in a steel mill, and the harm is much less than that of colored ones. Look before you leap for your future.
Seeking adoption is a satisfactory answer.