Blue collar workers we're targeted
Hoover Dam<span>, once known as Boulder Dam, is a concrete arch-gravity dam </span>in<span> the Black Canyon ....</span>Construction<span> of a rail line joining Las Vegas and the dam site began </span>in<span> September </span>1930<span>. .... Falling objects were the most common cause of death on the dam site; the highscalers' work thus </span>helped<span>ensure</span><span> worker safety</span>
<span>Herbert Hoover earned the nickname “The Great Humanitarian" because he voluntarily did services in extensive flood work, especially when the Mississippi River overflows its banks in 1927 causing flood to neighboring areas.</span>
