our products

D&Q Mining is a high-tech company integrating R&D, production and sales. It provides mature products and solutions such as crushers, sand making, milling equipment, mobile crushing stations, etc., for aggregate, mining and waste recycling.

underground mining termed

Glossary of Mining Terms SEC

In the case of mining companies, the consideration paid for properties purchased is often a block of treasury shares. These shares are termed vendor shares and are normally pooled or escrowed. Visible gold Native gold which is discernible, in a hand specimen, to the unaided eye.

More

Underground Mining Terms Flashcards Quizlet

A mining method in which ore is removed in slices, following which the stope floor is raised using backfill before the next stope is removed Decline Also called a ramp, a sloping underground opening (Grade: 12 to 17%) to give access between levels/the surface

More

What is Underground Mining? (with pictures)

May 17, 2020· Mary McMahon Last Modified Date: August 16, 2020 . Underground mining is a technique used to access ores and valuable minerals in the ground by digging into the ground to extract them. This is in contrast with techniques like open pit mining, in which the surface layers of ground are scooped away to access deposits, or mountaintop removal, in which the top of a mountain is simply

More

Glossary of Mining Terms

4 99 Glossary of Mining Terms RPMGlobal 99 Glossary of Mining Terms RPMGlobal 5 Angle of Draw in coal mine subsidence, this angle is assumed to bisect the angle between the vertical and the angle of repose of the material and is 20° for flat seams. For dipping seams, the angle of break increases, being 35.8° from the vertical for a 40° dip.

More

Coal mining Underground mining Britannica

Underground mining. In underground coal mining, the working environment is completely enclosed by the geologic medium, which consists of the coal seam and the overlying and underlying strata.Access to the coal seam is gained by suitable openings from the surface, and a network of roadways driven in the seam then facilitates the installation of service facilities for such essential activities

More

Mining Terms Explained: A to Z Anglo American

Mining terms explained: A to Z Environment Climate change: A need for resilience and innovation 29 November 2017 Corporate leadership Our blueprint for the future of sustainable mining 13 March 2018 Corporate leadership A new world of geoscience data

More

Glossary of coal mining terminology Wikipedia

A drift is an underground road between seams; to be distinguished from drift mining. E. Engine pit. The shaft where the pumping engine was located was often termed the "engine pit"; the second shaft sunk, during development, was termed the "bye pit". In practice the bye pit

More

Glossary of Mining Terms

Azimuth A surveying term that references the angle measured clockwise from any meridian (the established line of reference). The bearing is used to designate direction. The bearing of a line is the acute horizontal angle between the meridian and the line. B Back The roof or upper part in any underground mining cavity.

More

Top ten mining terms you should know MINING.COM

Jul 28, 2014· Top Ten Mining Terms. 10. Yes, bench is more used in open pit mining but you can also have a ‘stope bench’ in underground mining, especially in

More

Coal mining Underground mining Britannica

Underground mining. In underground coal mining, the working environment is completely enclosed by the geologic medium, which consists of the coal seam and the overlying and underlying strata.Access to the coal seam is gained by suitable openings from the surface, and a network of roadways driven in the seam then facilitates the installation of service facilities for

More

Underground Mining Equipment Market: Coronavirus Pandemic

Sep 09, 2020· Sep 09, 2020 (The Expresswire) -- Fortune Business Insights offers a detailed overview of the global market in a report, titledUnderground mining equipment...

More

Glossary of Mining Terms

4 99 Glossary of Mining Terms RPMGlobal 99 Glossary of Mining Terms RPMGlobal 5 Angle of Draw in coal mine subsidence, this angle is assumed to bisect the angle between the vertical and the angle of repose of the material and is 20° for flat seams. For dipping seams, the angle of break increases, being 35.8° from the vertical for a 40° dip.

More

Glossary of Mining Terms Legends of America

Glossary of terms used in the American Mining Industry. Dry Diggings Earth excavated in the summer and held to be washed in winter when water was more plentiful.. Dry Washing Fine soil blown away, leaving the gold.. Drywasher A common desert mining tool similar to a highbanker but doesn’t need water.It operates by the use of wind. The light junk material is blown off the

More

Gold Mining Terms Glossary Gold Bug Park

Download our PDF of Gold Mining Terms. adit a horizontal or nearly horizontal underground passage coming to the surface at one end of a mine.; alluvial of or pertaining to alluvium; alluvial soil.; alluvium a deposit of sand, mud, etc., formed by flowing water.; assay to analyze (an ore, alloy, etc.) in order to determine the proportion of gold, silver, or other metal in it.

More

MINING TERMINOLOGY Underground mining and mining

If the excavation used for mining is entirely open or operated from the surface, it is termed a surface mine. If the excavation consists of openings for human entry below the earth’s surface, it is called an underground mine. The details of the procedure, layout, and equipment used in the mine distinguish the mining method.

More

A Glossary of the most common mining terms

May 04, 2018· For example, a 3:1 stripping ratio means that mining one cubic metre of ore will require mining three cubic metres of waste rock. Sulphide ore: Sulphide ores are generally found hundreds of metres below surface, and generally require underground mining infrastructure. The main benefit to sulphide ores is that they can be concentrated using a

More

Glossary of Mining Terminology Glace Bay

Glossary of Mining Terminology After Damp Gasses resulting from underground combustion, normally carbon monoxide. This is a loose term implying any fatal gas in a mine after an explosion or fire. Air Shaft A vertical opening into a mine for the passage of air. Airway Any passage in a mine along which an air current moves. Some passages are

More

Mining Terms Dictionary The Diggings™

Dictionary of terms related to Mining, Mining, Claim, geography, maps, the Bureau of Land Management, and The Diggings™.

More

Mining Terms

Important Terms for Underground Mining . Adit: A horizontal or nearly horizontal passage driven into a hill or mountain. It does not go completely through the hill or mountain. Apex: The upper most terminal edge of the vein on the surface or its nearest point to the surface.

More

Here are the Types of Underground Mining and Their

This method is called underground mining, whose types are explained below. Room and Pillar Mining. In this method, mining is carried out in an ore deposit, leaving behind some of the ore in the form of columns to support the roof and prevent it from collapsing. Thus, it results in the formation of spaces called ‘rooms’, where the ore is

More

How Underground Mining Works HowStuffWorks

Underground mines are the alternative to surface mines. Surface mines excavate from the top down, a method that can become inefficient at depths greater than about 200 feet (60 meters) [sources: Illinois Coal Association, De Beers].Undergrounds coal mines can drive 2,500 feet (750 meters) into the Earth and other types even deeper -- uranium mines can reach 6,500 feet, or

More