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2. Mining lamp - Wikipedia

   en.wikipedia.org/wiki/Mining_lamp

   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]

3. Wheat lamp - Wikipedia

   en.wikipedia.org/wiki/Wheat_lamp

   A wheat lamp is a type of incandescent light designed for use in underground mining, named for inventor Grant Wheat and manufactured by Koehler Lighting Products in Wilkes-Barre, Pennsylvania, United States, a region known for extensive mining activity.

4. Safety lamp - Wikipedia

   en.wikipedia.org/wiki/Safety_lamp

   Modern flame safety lamp used in mines, manufactured by Koehler. 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.

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6. Carbide lamp - Wikipedia

   en.wikipedia.org/wiki/Carbide_lamp

   A mining or caving lamp has calcium carbide placed in a lower chamber, the generator. The upper reservoir is then filled with water. A threaded valve or other mechanism is used to control the rate at which the water is allowed to drip into the chamber containing the calcium carbide.

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8. Headlamp (outdoor) - Wikipedia

   en.wikipedia.org/wiki/Headlamp_(outdoor)

   Headlamp attached to a helmet. A headlamp, headlight, or head torch is a light source affixed to the head typically for outdoor activities at night or in dark conditions such as caving, orienteering, hiking, skiing, backpacking, camping, mountaineering or mountain biking. Headlamps may also be used in adventure races.

9. Polaris mine - Wikipedia

   en.wikipedia.org/wiki/Polaris_mine

   Polaris zinc mine was a former underground mine on Little Cornwallis Island in the Canadian territory of Nunavut (Northwest Territories prior to Nunavut's official separation). [2] The zinc mine was located 1,120 km (700 mi) north of the Arctic Circle , and 96 km (60 mi) north of the community of Resolute . [ 3 ]