sentences:  In 1853 the S&CR pooled its locomotive fleet with that of the Shrewsbury and Birmingham Railway, and Joseph moved south to new, larger locomotive works at Wolverhampton (Stafford Road).The following year the two brothers became employees of the Great Western Railway when the Shrewsbury & Chester, along with other standard gauge lines, were amalgamated with the mostly broad gauge GWR.Wolverhampton's task at first was to keep the miscellaneous stock of the various standard gauge lines in working order, but from 1858 Joseph Armstrong was ready to start constructing new locomotives there.