div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=stiffleg-derrick-draglinepdfengineering-and-contracting-for-december-17-1919htmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: Stiffleg Derrick Draglinepdf · Engineering and Contracting for December 17 1919 691 Railway Grading with Stiffleg Derrick Draglines TWO ordinary stiff-leg derricks equipped with loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader035vdocumentsnetreader035viewer20220629075aa3cf897f8b9a46238ed64fhtml5thumbnails1jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=2Page 2button div class=ts-imageimg data-url=stiffleg-derrick-draglinepdfengineering-and-contracting-for-december-17-1919htmlpage=2 data-page=2 class=ts-thumb lazyload alt=Page 2: Stiffleg Derrick Draglinepdf · Engineering and Contracting for December 17 1919 691 Railway Grading with Stiffleg Derrick Draglines TWO ordinary stiff-leg derricks equipped with loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader035vdocumentsnetreader035viewer20220629075aa3cf897f8b9a46238ed64fhtml5thumbnails2jpg width=140 height=200 divdiv