a 'minimum security prison' [=a prison in which prisoners are allowed more freedom than in most other prisons because they are not considered dangerous or likely to escape]
Ten years is the 'minimum' needed. = We'll need 10 years 'at a/the minimum'. [=we'll need at least 10 years]
We need to keep expenses 'to a (bare) minimum'. [=we need to keep expenses as low as possible]
(..) Excuse me, Mr. Pink, but the last fuckin' thing you need's... another cup of coffee. These ladies aren't starvin' to death. They make minimum wage. I used to work minimum wage, and when I did... I wasn't lucky enough to have a job that society deemed tip-worthy. You don't care they're (..)1992 Reservoir Dogs