My hiring was done through a job posting board, but others I worked with had been hired through other means. The interview was fairly standard. Went through a drug test, asked about knowledge and work experience. After the interview I was given a tour of the facility and introduced to the area managers and other employees. Everyone was very nice and after seeing how safety minded the whole company was I agreed to be hired on. It was very quick and informative and is still the best interview process I've ever experienced.