Full: When Black Powder Mine is triggered, all nearby foes are struck for 20...30 damage, become Blinded, and begin Bleeding for 7...10 seconds. Black Powder Mine ends after 90 seconds. While activating this skill, you are easily interrupted.
Note that although it is a trap, Black Powder Mine is not a Ranger specific skill, and thus will not be affected by expertise.
Bug! In the Italian translation, the skill has been erroneously translated as "Miniera di Polvere Nera" instead of "Mina di Polvere Nera". "Miniera" has the same meaning as "mine" only when referring to a "Mining place". That is not the case for this skill.