Final answer:
The reason why Mic's mother paid Sal to put him in the mines is not mentioned in the provided information.
Step-by-step explanation:
The reason why Mic's mother paid Sal to put him in the mines is not mentioned in the provided information. Without more context, it is difficult to determine the exact reason. It is possible that Mic's mother paid Sal to put him in the mines because they needed the income or believed it would benefit Mic in some way.