This week in our series, Robert Bostic and Leo Scully tell about the gold rush and the important part cowboys played in settling the West.

VOA: special.2010.03.18

You first had the gold rush in the 1850s

先是在19世纪50年代兴起了淘金热，

关于硅谷 - SpeakingMax英语口语达人

Today's word,pan, takes us back to the days of the gold rush in California.

VOA: special.2010.04.25