You would be surprised how many Boomers are working these FIFO (fly in fly out) jobs. I did on a 7/7 rotation for 10 years until I retired at 65 1/2. At least 50% of the workforce of 4000 was over 40.Hopefully you didn't have to spend too much time there. It looks like a really tough place to work, especially in the winter. One person told us that many of the crews work 2 weeks on, 12 hour days, then the company flies them home for 2 weeks off. That's a job for young people. I hope they get paid lots of money.
Very lucrative financially, and people look to establish a good retirement fund. It is tough on the home life however and there were many divorced/separated men and women onsite.