It was with managers from various sites and mines. They all seemed to have their own needs and asked a wide variety of questions. This was good in some ways so I was able to see the various needs of each site and obtain insight on the managers.
I applied online. The process took 2 weeks. I interviewed at Luminant (Dallas, TX) in Feb 2018
Interview
It took 2 weeks. I scheduled the phone interview and they called me back saying I got the offer. The interview had no in person interview since it was late in the process.
One phone call screen with mostly behavioral questions. Just make sure you know basic interview questions and you should be fine. Phone call lasted 30 minutes and they schedule the interview beforhand.