Brown coal mining limits in North Bohemia within the currently demarcated limits, e.g. Horní Jiřetín and Černice. This article focuses almost exclusively on the limits as they apply to mines in the Mostecko region roughly between the towns of Most and Litvínov operated by Czech Coal. During the course of the 20th century, the North Bohemian Basin, an area of over 1100 km2, was heavily mined from Kadaň to Ústí nad Labem for brown coal for burning in a large number of thermal power stations, electrical power stations and factories. In the 1970s and 1980s, the mining increased on a massive scale, and because of the expansion
Electro Scientific Industries to MKS Instruments, Inc. The deal was expected to close in the first quarter of 2019. ESI was founded in 1944 as Brown Engineering, later becoming Brown Electro-Measurement Corporation (BECO). In 1953, BECO's Douglas C. Strain and three other investors bought out Strain's partners at Brown and formed a new company, Electro-Measurements Inc., which used the brand name "ESI" in marketing. The acronym stood for "excellent scientific instruments", but the company's name remained Electro Measurements Inc. until 1959, when it was changed to "ESI, Inc." and finally in 1960 to Electro Scientific Industries, Inc. (ESI). Prior to about 2000, the