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2. Mining lamp - Wikipedia

   en.wikipedia.org/wiki/Mining_lamp

   A mining lamp is a lamp, developed for the rigid necessities of underground mining operations. Most often it is worn on a hard hat in the form of a headlamp . History

3. 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.

4. Little Cornwallis Island - Wikipedia

   en.wikipedia.org/wiki/Little_Cornwallis_Island

   Little Cornwallis Island was the home to Polaris Mine, the most poleward base-metal mine in the world. In 1960 a vast concentration of zinc and lead was discovered on the island during mapping for oil permits. Cominco acquired land in the area and a gravity survey in 1970 detected a large anomaly. By 1973 surface drilling and underground ...

5. 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 ]

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.

7. 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.