Is it correct to use the word mines and a pronoun?

It depends on what you mean by "mines" and how you're using the pronoun. Here's a breakdown:

1. "Mines" as a possessive adjective:

* Correct: "These are my mines." (Here, "mines" is a plural noun, and "my" is a possessive adjective modifying it.)

* Incorrect: "These are mine." (This is grammatically correct but sounds awkward and informal.)

2. "Mines" as a noun:

* Correct: "Those mines are dangerous." (Here, "mines" is a noun referring to explosive devices.)

* Correct: "Those mines are dangerous, and they need to be deactivated." (Here, "they" refers to the mines.)

3. "Mines" as a possessive pronoun:

* Incorrect: "Those are mines." (This sentence would need a noun after "mines" to be grammatically correct, e.g., "Those are mines of information.")

* Correct: "Those are mine. (Here, "mine" is a possessive pronoun, but it needs a noun phrase to make sense, e.g., "Those are mine, the ones you gave me.")

In summary:

* You can use "mines" with a pronoun when "mines" is a noun.

* Be careful not to confuse "mines" as a possessive adjective with "mine" as a possessive pronoun.

If you can provide an example sentence, I can give you more specific feedback.