What is the research direction of graduate students of safety engineering in north university of china, and does it have anything to do with the work in coal mines?

The direction of the school is generally the direction of national defense, which is not closely related to production, but I know that the treatment of graduates of this major has basically entered state-owned enterprises, similar to military industrial groups. Also, if you are willing to take several professional certificates, it will be better for a safety engineer. This major is very tight.