Since there was a lack of white European construction workers, in 1865 a large number of Chinese workers were recruited from the silver mines, as well as later contract workers from China. The idea for the use of Chinese labor came from the manager of the Central Pacific Railroad, Charles Crocker, who at first had trouble persuading his business partners of the fact that the mostly weedy, slender looking Chinese workers, some contemptuously called "Crocker's pets", were suitable for the heavy physical work. For the Central Pacific Railroad, hiring Chinese as opposed to whites kept labor costs down by a third, since the company would not pay their board or lodging. This type of steep wage inequality was commonplace at the time. Eventually Crocker overcame shortages of manpower and money by hiring Chinese immigrants to do much of the back-breaking and dangerous labor. He drove the workers to the point of exhaustion, in the process setting records for laying track and finishing the project seven years ahead of the government's deadline.