The series comes from the 'Current Employment Statistics (Establishment Survey)'
The source code is: CEU3133100001
Source: US. Bureau of Labor Statistics
Release: Employment Situation
US. Bureau of Labor Statistics, All Employees: Durable Goods: Primary Metals [CEU3133100001], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/CEU3133100001/, July 2, 2015.