Sentence examples for mining and surface from inspiring English sources

There are only two mining techniques for recovering coal from the earth; underground mining and surface mining.

Presplitting is one of the most common methods which is used in many open pit mining and surface blast design.

As compared with conventional mining and surface gasification, UCG promises lower capital/operating costs and also has other advantages, such as no human labor underground.

As compared with conventional mining and surface gasification, UCG promises lower capital operating costs and also has other advantages, such as no human labour underground.

Major human activities which lead to hydrologic alterations include irrigation (from ground water mining and surface water diversion), deforestation, wetland filling or drainage, and new dam construction.

To resolve the resource and environmental problems caused by mass coal exploitation and to ensure virtuous circulation of coal mining and surface eco-protection, backfilling mining technology has undergone sustained technical progress in China during the past several years.

AngloGold Ashanti has 20 operations in four regions consisting of open-pit and underground mines and surface metallurgical plants in 10 countries on four continents.

Changes to the pH and ORP of the mine waters and surface catalysis are the suggested mechanisms of accelerated removal of contaminants.

Coal fires can be associated with mining activities including underground and surface mine operations, coal stockpiles and coal waste piles, and they can also occur in unmined areas along coal seam outcrops.

The Company six deep-level mines and one surface operation in South Africa as well as a combination of surface and underground mining operations in the Americas, Australia and the African continent.

Temperature and humidity differences between the depths of the mine and the surface meant pneumonia and respiratory infections were rife, with one mining boss noting: "If 20 healthy Indians enter on Monday, half may emerge crippled on Saturday".