a mining company的用法和样例：
- We are forming a mining company; you had better cast in your lot with us.
- A mining company hopes to extract precious metals from the surrounding sea-bed.
- Chalco to acquire as a result of Rio Tinto deal fails, Minmetals acquisition of OZ as a mining company in Australia, China one of the largest transactions.
- The ship's bow was blown off by a mine.
- He was trained there as a mining engineer.