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  2. Trench warfare - Wikipedia

    en.wikipedia.org/wiki/Trench_warfare

    Attacks across open ground became even more dangerous after the introduction of rapid-firing artillery, exemplified by the "French 75", and high explosive fragmentation rounds. The increases in firepower had outstripped the ability of infantry (or even cavalry) to cover the ground between firing lines, and the ability of armour to withstand ...

  3. Demining - Wikipedia

    en.wikipedia.org/wiki/Demining

    Detection and removal of landmines is a dangerous activity, and personal protective equipment does not protect against all types of landmine. Once found, mines are generally defused or blown up with more explosives, but it is possible to destroy them with certain chemicals or extreme heat without making them explode.

  4. Open terrain - Wikipedia

    en.wikipedia.org/wiki/Open_terrain

    Open terrain, open country or open ground is terrain which is mostly flat and free of obstructions such as trees and buildings. Examples include farmland , grassland and specially cleared areas such as an airport .

  5. Open-pit mining - Wikipedia

    en.wikipedia.org/wiki/Open-pit_mining

    Open-pit mining, also known as open-cast or open-cut mining and in larger contexts mega-mining, [1] is a surface mining technique that extracts rock or minerals from the earth. Open-pit mines are used when deposits of commercially useful ore or rocks are found near the surface where the overburden is relatively thin.

  6. List of spaceflight-related accidents and incidents - Wikipedia

    en.wikipedia.org/wiki/List_of_spaceflight...

    Komarov was killed when the capsule hit the ground at high speed. [ 9 ] [ 10 ] The Soyuz 1 crash site coordinates are 51°21′41″N 59°33′44″E  /  51.3615°N 59.5622°E  / 51.3615; 59.5622 , 3 kilometers (1.9 mi) west of Karabutak, Province of Orenburg in the Russian Federation , about 275 kilometers (171 mi; 148 nmi) east ...

  7. This daredevil has one of the most dangerous jobs. His ... - AOL

    www.aol.com/news/daredevil-one-most-dangerous...

    By the time the doors open at 2 p.m. for the show, Fischer is in her polyester usher uniform, helping audience members to their seats. Attendees buy refreshments before entering the Circus Vargas ...

  8. 'Crazy to see': Deep freeze, snow blankets parts of US as ...

    www.aol.com/news/dangerous-weather-coast-coast...

    Editor's note: This file captures the news of the snowstorm in the South from Tuesday, Jan. 21. For the latest updates on the snow, follow USA TODAY's coverage for Wednesday, Jan. 22.. LAFAYETTE ...

  9. Floating ground - Wikipedia

    en.wikipedia.org/wiki/Floating_ground

    Floating grounds can be dangerous if they are caused by failure to properly ground equipment that was designed to require grounding because the chassis can be at a very different potential from that of any nearby organisms, who then get an electric shock upon touching it. Live chassis TVs, also known as hot chassis, where the set's ground is ...