[Vox Solaris adventure problem]

Hi. In this moments I'am trying to do the  third part of the mission "Vox Solaris" and I can't  finish the mission because there are not coming the soldiers ho supposly are the ones that brings the energy to the drill I have been running in circles for 30 minutes searching for energy capsules for the drill and nothing. What should I do, abort the mission? Have I missed something? Does it have something to do with a bug?

Pd.: The drill only needs 40 seconds left to finish but I can't find more energy capsules to ensure that...