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A safety lamp is any of several types of lamp that provides illumination in places such as coal mines where the air may carry coal dust or a build-up of flammable gases, which may explode if ignited, possibly by an electric spark. Until the development of effective electric lamps in the early 1900s, miners used flame lamps to provide illumination.
1859 William Clark patented the first electrical mining lamp. [3] 1870s J.B.Marsaut (France) double gauze design [4] 1872 Coal Mines Regulation Act required locked lamps under certain conditions [5] 1881 Joseph Swan exhibited his first electric lamp 1882 Made by William Reid Clanny invented a 'bonnetted' Clanny lamp, [6]
The Davy lamp is a safety lamp used in flammable atmospheres, invented in 1815 by Sir Humphry Davy. [1] It consists of a wick lamp with the flame enclosed inside a mesh screen. It was created for use in coal mines, to reduce the danger of explosions due to the presence of methane and other flammable gases, called firedamp or minedamp.
UK Coal Production Ltd, formerly UK Coal plc, was the largest coal mining business in the United Kingdom. The company was based in Harworth, in Nottinghamshire. The company was a constituent of the FTSE 250 Index. The successor company that contains the former property division, Harworth Group, is still listed on the London Stock Exchange.
Maiden Holdings, Ltd. MH.PRA: Bermuda: Maiden Holdings North America, Ltd. MHNA: Bermuda: Maiden Holdings North America, Ltd. MHNB: US Maiden Holdings North America, Ltd. MHNC: US Main Street Capital Corporation MAIN: US Main Street Capital Corporation MSCA: US MainStay Defined Term Municipal Opportunities Fund MMD: US Mallinckrodt Public ...
Stock name Symbol Country of origin B&G Foods: BGS: US Babcock & Wilcox: BWC: US Babson Capital Corporate Investors MCI: US Badger Meter BMI: US Baker Hughes: BKR: US Ball Corporation: BLL: US Bally Technologies: BYI: US Baltic Trading BALT: US Banc of California: BANC: US Banco Bilbao Vizcaya Argentaria: BBVA: Spain: Banco Bradesco: BBD ...
With a huge 8.4% dividend yield, British American Tobacco throws off a lot of passive income, but there are risks to consider.
Anglo American plc is a British multinational mining company with headquarters in London, England.It is the world's largest producer of platinum, with around 40% of world output, as well as being a major producer of diamonds, copper, nickel, iron ore, polyhalite and steelmaking coal.