http://www.youtube.com/watch?v=E2OPU-7oARsYouTube - Bucyrus Erie walking dragline model[/video]
http://www.youtube.com/watch?v=-pWKfECR4XkYouTube - Bucyrus Erie 9W walking dragline model[/video]
http://www.youtube.com/watch?v=oNn8aP9fba4YouTube - Bucyrus Erie Walking Dragline Model[/video]
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