books.google.co.jp - In Yellow Steel, the first overarching history of the earthmoving equipment industry, William R. Haycraft examines the tremendous increase in the scope of mining and construction projects, from the Suez Canal through the interstate highway system, made possible by innovations in the earthmoving industry.Haycraft...http://books.google.co.jp/books/about/Yellow_Steel_The_Story_of_the_Earthmovin.html?id=vv0bQHZGebcC&utm_source=gb-gplus-shareYellow Steel: The Story of the Earthmoving Equipment Industry
