I was contacted by HR and invited to an on-site interview a few weeks later. The interview was a panel behavioral interview with the people I'd be working with and under (4 people). They asked situation-specific questions about things I'd dome in the past that prove skill necessary for the job. Personally, I don't find behavioral interviews any more productive than a standard 1:1 becasue you can BS your way through and fabricate responses ar bend the truth.
I contacted the only interviewer who gave me his information a couple of times over the next month and finally HR called me to make an offer and schedule the drug screening.
Overall a pretty standard experience for a manufacturing company interview for an engineer. If you have no qualms with working in oil and gas though, head for that industry...the pay is way better...especially upstream.