Imho the answer is... Depends!
You can't simply decide wheter your playing in set mining or not basing on opponents positions at the table.
Think. What does it means to play in set mining? Your flatting your PPs trying to get a set on the flop and then you try to stack you opponent. So good.
But when it is profitable to do that? Of course when the stacks are deep enough, let's say the std 100bb is ok. Certainly you're not playing in set mining against a shortstacked fish!
Another factor to consider is the table composition BEYOND you! CO raises, you hold pocket deuces on the BTN. You have 2 fishes on the blinds? You call! They're very likely to enter the pot increasing your implied odds.
In my opinion, playing in "set mining" in the pure sense of the word, is totally wrong. At the lower limits might be ok, by you loose tons of value whenever you play in hit/fold mode. Consider flatting the raises and then playback you opponent when you don't hit. Use your infos and float, raise on the flop, exploit your oppo
Usually I always flat PPs IP, I sometimes 3bet them against LP regs when I'm OOP on the blinds, since it's tricky to play 22-66 OOP, while it's much better holding other kind of hands.