Chief Engineer Hinderweir wants you to gather Lurker Venom, a Mo'grosh Crystal, and a Crocolisk Tear.
Begin collecting the disarming materials immediately, [player]. Lurker Venom can be found on the indigenous spiders in Loch Modan. Crocolisk tears are found here in the Loch as well. But a Mo'Grosh crystal will be very difficult to procure. The ogres to the northeast mine them but the crystals are a very rare commodity.
We need to be prepared to defuse a Dark Iron attack! Return to me once you've collected the needed items and I will prepare the mixture.