Types of Underground Mining Method Comparison

In any discussion of Methods of Underground Mining Comparison, one is repeatedly confronted with the difficulty of dealing with so many variable conditions It is not an exact science and in the choice of a method each varying factor has a certain weight, which, in many cases, experience alone can determine...

Hard-Rock Underground Mining - How Underground Mining ,

There are hard-rock underground mines, and there are soft-rock underground min Coal deposits, for instance, live in relatively soft sedimentary rock Gold deposits live in igneous or metamorphic rock, which is relatively hard, as do diamonds, copper, silver, nickel and zinc [source: Great Mining ....

Excavation Methods - Drifts/Inclined Shafts/Declines ,

Drifts/Inclined Shafts/Declin Excavation methods for drifts are likely to be the same whether straight or with a change of direction There are 3 methods which ,...

A New Perimeter Control Blast Design Concept for ,

A NEW PERIMETER CONTROL BLAST DESIGN CONCEPT FOR UNDERGROUND METAL/NONMETAL DRIFTING APPLICATIONS Stephen R Iverson, William A Hustrulid, and Jeffrey C Johnson Office of Mine Safety and Health Research National ,...

Mining types and methods - cdcgov

Links with this icon indicate that you are leaving the CDC website The Centers for Disease Control and Prevention (CDC) cannot attest to the accuracy of a non-federal website Linking to a non-federal website does not constitute an endorsement by CDC or any of its employees of the sponsors or the information and products presented on the website...

Mining types and methods - cdcgov

Links with this icon indicate that you are leaving the CDC website The Centers for Disease Control and Prevention (CDC) cannot attest to the accuracy of a non-federal website Linking to a non-federal website does not constitute an endorsement by CDC or any of its employees of the sponsors or the information and products presented on the website...

Blasting

Underground Mining Development Different Access to Ore Bed Mining Cycle Some Examples Surface mining Development Blasting Explosives Drift or Tunnel Blasting Blast Pattern Design Firing Sequence Smooth Wall Blasting Supporting Objective Material Used and reinforced Typical rockbolt systems ...

Drift mining - Wikipedia

Drift mining is either the mining of an ore deposit by underground methods, or the working of coal seams accessed by adits driven into the surface outcrop of the coal bed A drift mine is an underground mine in which the entry or access is above water level and generally on the slope of a hill, driven horizontally into the ore seam...

Glossary of Hardrock Mining Terms

Diggers - The clothes a miner wears underground Double-jack - 12 lb sledge hammer Drift - A horizontal tunnel driven along the mineral vein Dry - The shower house for miners Dry clothes are left there and diggers put on Face - The end of the drift, crosscut, or tunnel, generally where the ,...

CDC - Mining - DRIFT Software - NIOSH

DRIFT is a program to design perimeter control blast rounds for typical underground drifting applications The design utilizes current methods of perimeter blasting with the added design element of a buffer row coordinated with the perimeter row to reduce perimeter damage...

Coal Mining, Kentucky Geological Survey, University of ,

There were 264 active underground mines and 240 active surface mines in Kentucky in 2000 Underground Mining Underground modes of access include drift, slope, and shaft mining, and actual mining methods include longwall and room and pillar mining Drift mines enter horizontally into the side of a hill and mine the coal within the hill...

What are the disadvantages of underground mining - Answers

underground mining is done when the rocks, minerals of gemstones are too far underground to get out with surface mining some kinds of underground mining are Borehole Mining Drift Mining ,...

How Is Graphite Extracted? | Sciencing

Apr 25, 2017· Underground mining is done when the ore is present at a greater depth Drift mining, hard rock mining, shaft mining and slope mining are exclusive to underground mining and are employed in graphite extraction...

A New Perimeter Control Blast Design Concept for ,

A NEW PERIMETER CONTROL BLAST DESIGN CONCEPT FOR UNDERGROUND METAL/NONMETAL DRIFTING APPLICATIONS Stephen R Iverson, William A Hustrulid, and Jeffrey C Johnson Office of Mine Safety and Health Research National ,...

Techniques in Underground Mining - ILO Encyclopaedia

Techniques in Underground Mining , The internal ramp is an inclined drift which links underground levels at different elevations (ie, depths) All underground openings need services such as exhaust ventilation and fresh air, electric power, water and compressed air, drains and pumps to collect seeping ground water, and a communication ....

Glossary of Hardrock Mining Terms

Diggers - The clothes a miner wears underground Double-jack - 12 lb sledge hammer Drift - A horizontal tunnel driven along the mineral vein Dry - The shower house for miners Dry clothes are left there and diggers put on Face - The end of the drift, crosscut, or tunnel, generally where the ,...

Hard-Rock Underground Mining - How Underground Mining ,

There are hard-rock underground mines, and there are soft-rock underground min Coal deposits, for instance, live in relatively soft sedimentary rock Gold deposits live in igneous or metamorphic rock, which is relatively hard, as do diamonds, copper, silver, nickel and zinc [source: Great Mining ....

Underground haulage selection: Shaft or ramp for a small ,

Underground haulage selection: Shaft or ramp for a small-scale underground mine The extracted ore is transported to surface via shaft hoist that had initially designed based on the ore depth of approxi-mately 120 m down from the surface, later on this shaft was deepened to a depth of -220 m Recent exploration studies...

HOW TO DIG A TUNNEL !!! Drift Mining for Gold, ask Jeff ,

Jun 09, 2016· Want to know How To Dig a Tunnel , well ask no more cause we will teach you how to dig one in just about any material We also will so you basic tunnel drifting techniques to find Gold What could ....

What are some of the most important disadvantages and ,

Sep 06, 2016· Underground Mining is a method of Mining, where the mineral is extracted without removing the top soil and rocks In this way we do not disturb the surface feature such as forest, agriculture land, rivers and residential areas The major disadvant....

Sketches of Alaska: Modern Placer Drift Mining - Chatanika ,

Nov 05, 2011· Modern Placer Drift Mining - Chatanika Valley, Alaska When its -40 ° F above ground, its only +28 ° F underground I had a mining engineer friend who, knowing I was interested in modern mining as well as mining history, invited me to see an operating placer drift mine operation in the Chatanika Valley...

Drift Mining - Prospector's Paradise

Drift mines have flat entries into the paystreak from a hillside Drift mining poses a higher economical means of recovery than other more invasive types of underground mining that entail digging up through rock Once tunnels are driven, they may be utilized for haulage, ventilation, and exploration of further possible gold seams...

Mining Facts for Kids

Mining techniques can be divided into two common excavation types: surface mining and sub-surface (underground) miningToday, surface mining is much more common, and produces, for example, 85% of minerals (excluding petroleum and natural gas) in the United States, including 98% of metallic or...

Underground mining (hard rock) - Wikipedia

Underground hard rock mining refers to various underground mining techniques used to excavate hard minerals, usually those containing metals such as ore containing gold, silver, iron, copper, zinc, nickel, tin and lead, but also involves using the same techniques for excavating ores of gems such as diamonds or rubi...

Development of large hole burn cut drift rounds

DEVELOPMENT OF LARGE HOLE BURN CUT DRIFT ROUNDS BY JOSEPH J YANCIK, JRa A THESIS submitted to the faculty of the SCHOOL OF MINES AND METALLURGY OF THE UNIVERSITY OF MISSOURI in partial fulfillment of the work required for the Degree of MASTER OF SCIENCE IN MINING ENGINEERING Rolla, Missouri 1956 Approved by:...

Drift mining - Wikipedia

Drift mining is either the mining of an ore deposit by underground methods, or the working of coal seams accessed by adits driven into the surface outcrop of the coal bed A drift mine is an underground mine in which the entry or access is above water level and generally on the slope of a hill, driven horizontally into the ore seam...

Drift mining - Infogalactic: the planetary knowledge core

Drift mining is either the mining of an ore deposit by underground methods, or the working of coal seams accessed by adits driven into the surface outcrop of the coal bed A Drift Mine is an underground mine in which the entry or access is above water level and generally on the slope of a hill, driven horizontally into the ore seam...

Mining Terminology - Hawkeye Gold & Diamond Inc

A drift is an a horizontal underground passageway that provides access to mining operations and typically follows along strike of a vein or rock formation What is the meaning of drilling? In general, drilling is the process of boring a hole in a rock for the purpose of taking rock samples in exploration and for the insertion of explosives in ....

Types of Underground Mining Method Comparison

In any discussion of Methods of Underground Mining Comparison, one is repeatedly confronted with the difficulty of dealing with so many variable conditions It is not an exact science and in the choice of a method each varying factor has a certain weight, which, in many cases, experience alone can determine...