Pontoon bridge in 638. The army of the Umayyad Caliphate built a pontoon bridge over the Bosporus in 717 during the Siege of Constantinople (717–718). The Carolingian army of Charlemagne constructed a portable pontoon bridge of anchored boats bound together and used it to cross the Danube during campaigns against the Avar Khaganate in the 790s. Charlemagne's army built two fortified pontoon bridges across the Elbe in 789 during a campaign against the Slavic Veleti. The German army of Otto the Great employed three pontoon bridges, made from pre-fabricated materials, to rapidly cross the Recknitz river at the Battle on the Raxa
Junk King into Canada under the "Junk Works" brand. Junk King and Junk Works reuse, recycle, or donate high percentages of items collected. As of April 2017, Junk King and Junk Works combined have over 10 franchises open in the United States and Canada, including Atlanta, Boston, Cleveland, Dallas, Kansas City, Los Angeles, Sacramento, San Antonio, and San Diego. Junk King was named one of INC. magazine's ten most promising franchises of 2011. Junk King recycles up to 50% of all the debris they haul. Junk King Junk King is a privately held junk removal and recycling company with over 100 franchise