Its plant was destroyed by fire on June 22 , 1902 .
Wolff & Zwicker Iron Works was an American ironworks and shipbuilding company located in Portland , Oregon from about 1893 until it went into receivership in 1900 .
Wolff & Zwicker Iron Works ' plant was destroyed by fire on June 22 , 1902 .
Wolff & Zwicker Iron Works was an American ironworks and shipbuilding company located in Portland , Oregon from about 1893 until it went into receivership in 1900 .