non-rotary tower
41Royal Observer Corps — Ensign Active 1925–1996 Country …
42Crystal Lake, Illinois — Crystal Lake The Big C.L. City …
43Marysville, Washington —   City   Flag …
44Chain drive — Roller chain and sprocket Mack AC delivery truck at the Petersen Automotive Museum with chain drive visible Chain drive is a way of transmitting mecha …
45Continuous distillation — Image 1: Typical industrial distillation towers Image 2: A crude oil vacuum distillation column as used in oil refineries …
46Fossil-fuel power station — A working coal plant in Rochester, Minnesota The St. Clair Power Plant, a large coal fired ge …
47Burbank, California — This article is about the city in Los Angeles County, California. For the community in Santa Clara County, California, see Burbank, Santa Clara County, California. City of Burbank   City   …
48Inventions in medieval Islam — A significant number of inventions were developed in the medieval Islamic world, a geopolitical region that has at various times extended from Al Andalus and Africa in the west to the Indian subcontinent and Malay Archipelago in the east.… …
49Deep foundation — A deep foundation installation for a bridge in Napa, California, United States …
50Electric power transmission — Electric transmission redirects here. For vehicle transmissions, see diesel electric transmission. 400 kV high tension transmission lines near Madrid Electric power transmission or high voltage electric transmission is the bulk transfer of… …
