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  • Underground mining (hard rock) - Wikipedia

    Underground hard rock mining refers to various underground mining techniques used to excavate hard minerals, mainly those containing metals such as ore containing gold, ... The primary sources of heat in underground hard rock mines are virgin rock temperature, machinery, auto compression, and fissure water.

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  • Drilling and Equipment Technology in Mining

    The type of drill bit used in the mining industry is dependent on the type of drilling being ... Diamond drilling - using large machines is the preferred method of...

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  • Young-Davidson mine: From ground breaking to a giant mine in just ...

    Sep 1, 2015 ... In the case of the Young-Davidson Mine, however, Guimond said the ... of the main contractors involved with the Young-Davidson mine is Dumas, ... Perhaps one of the more ambitious and innovative mining techniques used during the ... Off-loading the majority of the drilling equipment took place prior to...

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  • Dumas Mine Contracting

    Dumas is a mine contract service provider that offers mine construction, mine development, production mining, mine service and engineering with a focus on...

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  • Different Gold Mining Techniques Include Open ... - Rock-Drill-Bit.com

    Humans have developed many gold mining techniques from dredging, open ... Explosives and large drilling machines are used to drill or blow out the tunnels.

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  • Canadian Mining Technology - International Mining

    Apr 2, 2012 ... Other new mines being developed include molybdenum, potash, diamond, ... Modelling is Geosoft's Magnetisation Vector Inversion (MVI) modelling technique. ... The resulting “Simulator Lab” at Kinross Gold's recruiting offices in ... Dumas now has an extensive, high-quality production equipment fleet.

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  • Straight up - Redpath Mining

    Oct 2, 2014 ... vertical mine shaft is by far the most cost- effective method to get rock to the sur- face on a ... operations at Dumas, says: “There has also been an ... diameter, or in conjunction with drill and blast as a two-pass ... machine utilising raise-boring technology .... a gold and copper mine starting with a steep slope.

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  • Mining - Wikipedia

    Mining is extraction of valuable minerals or other geological materials from the earth usually ... The gold mines of Nubia were among the largest and most extensive of any in Ancient Egypt. ... Roman techniques were not limited to surface mining. ... the water table and dewatered the mines using several kinds of machines,...

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  • Dumas :: Mine Development

    Dumas has particular experience in the following areas of underground mine development: ... Dumas is a leading provider of conventional open raising methods and ... Dumas' clients with access to modern and advanced raise boring equipment ... With the capacity to drill holes up to 7 metres in diameter and more than 750...

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  • Mining Contractors - Virtual Mine Expo

    Virtual Mine Expo, Mine Contractor page. ... shaft construction, and, with its own techniques, replace other dangerous methods. ... Dumas Contracting ... Contract Mining, Bazooka diamond drilling, Equipment rental .... Our mining expertise includes coal, copper, uranium, nickel, gold, iron ore, silver, lead, zinc and magnesite.

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