How about Rushan Jinzhou Mining Group? Working in Zhihu.

Shandong Jinzhou Mining Group Co., Ltd. is a large enterprise group integrating gold exploration, mining, smelting and comprehensive utilization of tailings. It is one of the earliest enterprises in the national gold industry to enter the gold mine with profits and taxes exceeding 100 million tons.

Part of the company's information is as follows: the number of employees: more than 2,000, including 365 professional and technical personnel. Production line: There are three production lines for mineral processing, one for cyanidation, smelting, aerated concrete block, autoclaved brick and heap leaching for gold extraction.