Primero, Colorado, 1901-1928: John D. Rockefeller, Jr., Company Towns, and the Quest for a Better World Colorado, Fuel, & Iron Company (CF&I) began construction of Primero, Colorado in 1901. Primero was positioned about 15 miles west of Trinidad, Colorado at the site of the most promising coal deposits in the region. While CF&I built other towns and opened other mines, Primero quickly proved to be the wealth producer that company officials had hoped...