These numbers are up from the 1990's when a severe drought of work for boilermakers caused many boilermakers to seek other lines of work.
The golden age of boilermaker jobs was certainly the 1990s.
mnli hypothesis: The golden age of boilermaker jobs was certainly the 1990s. premise: These numbers are up from the 1990's when a severe drought of work for boilermakers caused many boilermakers to seek other lines of work.