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2. Bellevue Township, Jackson County, Iowa - Wikipedia

   en.wikipedia.org/wiki/Bellevue_Township,_Jackson...

   Bellevue Township is a township in Jackson County, Iowa, United States. History. Bellevue Township was established in 1840. [1] References This ...

3. Safety lamp - Wikipedia

   en.wikipedia.org/wiki/Safety_lamp

   The Sussmann lamp [58] was introduced into Britain in 1893 and following trials at Murton Colliery in Durham it became a widely used electric lamp with 3000 or so reported by the company in use in 1900 [59] However, by 1910 there were only 2055 electric lamps of all types in use – about 0.25% of all safety lamps. [60]

4. Electrical equipment in hazardous areas - Wikipedia

   en.wikipedia.org/wiki/Electrical_equipment_in...

   Explosion-proofing designs equipment to contain ignition hazards, prevent entry of hazardous substances, and, contain any fire or explosion that could occur. Different countries have approached the standardization and testing of equipment for hazardous areas in different ways. Terminology for both hazards and protective measures can vary.

5. Largest artificial non-nuclear explosions - Wikipedia

   en.wikipedia.org/wiki/Largest_artificial_non...

   The explosion, heard more than 100 miles (160 km) away, [8] destroyed the entire post which was supplied initially with "three thousand stand of arms, from five to six hundred barrels of powders and a great quantity of fixed ammunition, shot[s], shells". [9] About 270 men, women and children lay dead. [10]

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   Get breaking news and the latest headlines on business, entertainment, politics, world news, tech, sports, videos and much more from AOL

7. Bellevue, Iowa - Wikipedia

   en.wikipedia.org/wiki/Bellevue,_Iowa

   Bellevue was named the county seat in 1837 before Iowa was a state. The Greek Revival style courthouse was built in 1845 to house the Jackson County Courthouse but in 1849, the county seat was moved from Bellevue to Andrew because it was a more central location. The structure was again the county courthouse from 1851 to 1861 during the ...