February 24, 1839 Civil engineer William Smith Otis of Philadelphia was issued U.S. patent number 1,089 for the steam shovel, which was classified in that patent as a “Crane-Excavator for Excavating and Removing Earth.” As designed by Otis, this large steam-powered machine -- when mounted on wheeled devices such as carriages or railroad cars --... Continue Reading →
In Hong Kong, a significant portion of Tsing Sha Highway was first opened to traffic. The Friday morning debut took place five years and four months after construction on this segment of a major expressway in one of the world’s most densely populated regions had begun. The segment, which extends from Sha Tin (an area... Continue Reading →