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 »  Home  »  Underground Mining
Underground Mining
Sub-surface mining or underground mining refers to a group of techniques used for the extraction of valuable minerals or other geological materials from the earth. In contrast to the other main type of excavation, surface mining, sub-surface mining requires equipment and/or manpower to operate under the surface of the earth.

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» Sterling Mining Closes US$1.8 Million Financing
By super admin | Published 05/7/2008 | Underground Mining | Unrated
Sterling Mining Company (TSX: SMQ)(OTCBB: SRLM)(FRANKFURT: SMX) announces that it has closed an equity financing of US$1.8 million by way of non-brokered private placement. The placement will consist of 741,164 units at US$2.40 per unit.
» Japan Mining Company Marubeni to Buy Two Mining Projects in Chile
By super admin | Published 04/26/2008 | Underground Mining | Unrated
Japanese trading house Marubeni Corp. announced Friday plans to acquire stakes in two mining projects in Chile from Antofagasta PLC amid booming demand for copper.

» Underground Mining Methods
By super admin | Published 04/25/2008 | Underground Mining | Rating:
Under certain circumstances surface mining can become prohibitively expensive and underground mining may be considered. A major factor in the decision to operate by underground mining rather than surface mining is the strip ratio, or the number of units of waste material in a surface mine that must be removed in order to extract one unit of ore. 
» 3 companies agree to limit mountaintop mining
By super admin | Published 04/24/2008 | Underground Mining | Unrated
A trio of coal companies has agreed to temporarily limit operations at three mountaintop removal mines opposed by environmentalists.

» Bucyrus enters into preliminary agreement in China
By super admin | Published 04/24/2008 | Underground Mining | Unrated
Bucyrus International Inc. entered into a preliminary agreement Tuesday with Huainan Mining Industry Group for a possible joint venture in the Huainan mining area of China's Anhui Province.


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