Marconi Research Centre than 1,200 engineers, technicians, craftsmen and support staff. It was also home to the Marconi Company's museum containing numerous original artifacts from the pioneering period of Guglielmo Marconi's work on wireless telegraphy. The site still includes a prominent local landmark, a -high (110 m) former Chain Home radar tower visible across the surrounding countryside. Marconi Research Centre Marconi Research Centre is the former name of the current BAE Systems Applied Intelligence Laboratories facility at Great Baddow in Essex, United Kingdom. Under its earlier name, research at this site spanned military and civilian technology covering the full range of products offered
First long-distance telephone line First long-distance telephone line The world's first long-distance telephone line, established in 1877, connected French Corral with Bowman Lake (previously known as French Lake) at the headwaters of the Yuba River. It was strung across trees and poles for a distance of in Nevada County, California, passing through Birchville, Sweetland, North San Juan, Cherokee, North Columbia, Lake City, North Bloomfield, Moores Flat, Graniteville, and Milton. The line was operated by the Ridge Telephone Company for the service of Milton Mining and Water Company, as well as other water companies. The line was an improvement over the system used in nearby