Volatile Mines - is not work

Volatile Mines makes the action of detonating mines instant - it takes no time. Without this notable passive, detonating mines is a spell with a base 0.2 second cast time. The passive removes that time.

It does not remove the need to detonate mines, or when you can do it (after they're placed and have armed).

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Baelrog wrote:

Ahh, that sort of clears it up, thanks for the info. However, it still takes some sort of action, because unfortunately it still disrupt channeling spells when detonating.

Yes. Detonate mines is still an action you're taking, just one that (now) takes no time to perform.