If you were to phrase the question as "What is 12's industry?", then you could answer as mining, but phrasing it as "producing" implies a product, which would be coal. Mining is what they are known for, but with the wording, coal would be correct, or should at least be accepted.
If you ask what it produces, you should at least put coal as an acceptable answer for District 12. Also, she finds two girls, not just Bonnie. The other girl's name is Twill.
Im pretty sure that you don't produce a verb. District 12 produces .... coal or minerals. You can't really produce mining. Considering you can't actually do anything with mining, once its produced.
For Example:
President Snow: Hey Seneca Crane, District 12 just sent us this package of mining...
Seneca Crane: Wow, what a useless package to send us. I'd rather they sent us the minerals they mined for us. Or, some coal for my fireplace. What can i do with mining....
Plutarch: You guys are dumb. District 13 is going to make you wish you drank nightlock, instead of cracking corny jokes
Haymitch: Nah, they are dumb. They don't know that mining is actually a verb, and you can't send someone a verb. Hey, Im going to send you a package of jetpacking.... cause that makes sense. Oh wait, Im drunk.
Johanna: You guys are idiots... Just drown me in more water... so I don't have to read this anymore!
President Coin: Hahaha, At least I got shot, with an arrow, by the person I gave it to. Im dumb
For Example:
President Snow: Hey Seneca Crane, District 12 just sent us this package of mining...
Seneca Crane: Wow, what a useless package to send us. I'd rather they sent us the minerals they mined for us. Or, some coal for my fireplace. What can i do with mining....
Plutarch: You guys are dumb. District 13 is going to make you wish you drank nightlock, instead of cracking corny jokes
Haymitch: Nah, they are dumb. They don't know that mining is actually a verb, and you can't send someone a verb. Hey, Im going to send you a package of jetpacking.... cause that makes sense. Oh wait, Im drunk.
Johanna: You guys are idiots... Just drown me in more water... so I don't have to read this anymore!
President Coin: Hahaha, At least I got shot, with an arrow, by the person I gave it to. Im dumb