It’s Screamers. They are mining and in a kind of civil war. They refer to a group mining Berynium on Triton 4. The also refer to the red cigarettes in at least two scenes. Here is an excerpt:
The funny thing is, I can't remember what she looked like.
Liar.
Automated voice over loud speaker:
Attention, all personnel.
Warning, radiation alert, please light your reds.
Oh, I left mine in the office, you got one?