adit tunnel mining

Adit | Definition of Adit by Merriam-Webster

Adit definition is - a nearly horizontal passage from the surface in a mine. a nearly horizontal passage from the surface in a mine… See the full definition. SINCE 1828. Menu. JOIN MWU Gain access to thousands of additional definitions and advanced search features—ad free! JOIN NOW ...

Tunnelling Terms

Tunnelling Terms. Accelerator A substance added to concrete/shotcrete to accelerate setting. Adit A tunnel driven from ground surface to provide access to or drainage from underground workings; a length of tunnel driven for an exploration – exploration adit.

Mine exploration, exploring disused mines and quarries ...

Mine Exploration & Mining History. AditNow is the leading web site and forum for the mine explorer as well as industrial archaeologists and historians.If you have an interest in mine exploration or mining history you will find thousands of mines in the UK and international mines as well as tens of thousands of photos of mines and a vast resource of mining articles and historical documents.

Adit dictionary definition | adit defined

adit definition: an approach or entrance; specif., an almost horizontal passageway into a mineOrigin of aditClassical Latin aditus, past participle of adire, to approach from ad-, to + ire, to go: see exit...

adit - definition and meaning - wordnik.com

adit: An almost horizontal entrance to a mine. 5814738 commented on the word adit "To the north were the mines themselves: dangerous, undershored scratch drifts that went down fifty feet or so and then spread like fingers clutching for gold and silver and copper and the occasional nest of firedims.

Hilltop Mine, Rustler Park, California Mining District ...

The Hilltop Mine consists of 4 major levels with 3 of those being connected, and with over 5.5 miles of underground workings. The Kasper Tunnel is 3,000 feet long with 6,000 feet of workings; the Gray Tunnel is 2,000 feet long with 3,000 feet of workings; the Rhem tunnel is …

Tours — Town of Cobalt

Colonial Adit Tour. Experience early mining. The Colonial Mine was in operation from 1907 until 1937 and produced 1.25 million ounces of silver. Interpretive guided tours of this site are available through the Cobalt Mining Museum. The visitor has an opportunity to experience the reality of early silver mining in an underground tunnel.

tunnels and underground excavations | History, Methods ...

Tunnels and underground excavations, horizontal underground passageway produced by excavation or occasionally by nature's action in dissolving a soluble rock. Tunnels have many uses: for mining ores, for transportation—including road vehicles, trains, subways, and canals—and for …

Driving an Underground Mine Adit: Methods & Equipment

Table of ContentsMining EquipmentMechanical LoadersScrapersShovel loadersTransportation equipmentVentilating equipmentMethods of Driving AditCost of Driving an Entrance to an Underground Mine Although practices in vogue for many years are still employed in small-scale operations, decided advances have been made, particularly in the last decade and especially in connection with large …

What is an Adit? - Definition from Trenchlesspedia

An adit is a horizontal or near-horizontal passageway to a larger underground excavation for the purposes of ventilation, water removal, or auxiliary entrance. The short tunnels are used in both mining and tunneling to access the main shaft at strategic points.

Adit | Article about adit by The Free Dictionary

adit (ăd`ĭt), in mining, underground passage excavated nearly horizontally, with one end open to the earth's surface, usually used to service a mine.The adit end is the furthermost end from the surface, i.e., the location where miners work. The adit collar is the area where an adit opens to the surface and must be reinforced against any surface weakness.

Salt Lake County, Utah Mines - Western Mining History

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property. County mine maps available to premium members

Adit vs Tunnel - What's the difference? | WikiDiff

As nouns the difference between adit and tunnel is that adit is a horizontal or nearly horizontal passage from the surface into a mine as contrasted to a shaft which is a vertical entry passage an adit may be used for ventilation, haulage, drainage, or other purposes while tunnel is an underground or underwater passage. As a verb tunnel is to make a tunnel through or under something, to burrow.

Shaft & Adit / Enlargement Tunnel Excavation By Drill ...

The Marymount adit tunnels were constructed / excavated beneath the existing Thomson road and to achieve the mining progress the two faces of the tunnels were at times blasted in the same round with a delay interval which would not have been possible if a different initiation system was used.

20th Century Developments (2) - Clay Heritage

20th Century Developments (2) Adit Mining 'Adit' or 'Inclined Tunnel' mining, which had been introduced in the 1930's, largely replaced vertical shaft mining during the 1950's and 1960's. Pairs of tunnels in South Devon and single tunnels in Dorset were driven into the ground at a shallow angle following a particular seam from close to its ...

Mine Inventory and Compilation of Mine-Adit Chemistry …

Mine Inventory and Compilation of Mine-Adit Chemistry Data By Stanley E. Church, M. Alisa Mast, E. Paul Martin, and Carl L. Rich Chapter E5 of Integrated Investigations of Environmental Effects of Historical Mining in the Animas River Watershed, San Juan County, Colorado Edited by Stanley E. Church, Paul von Guerard, and Susan E. Finger

What is adit in dam? - Answers.com

An adit is a horizontal tunnel used in mining. They're not directly related to dams but in the construction of Hoover Dam a number of adits were used to facilitate the construction of the various ...

Adit - What's That? - Mining Searches UK

An adit is a horizontal or nearly horizontal tunnel for working or draining a mine, and can also be called a drift or a sough – depending on where you are in the country. Adit levels can be deep or shallow and are generally the lowest level from which water can be drained.

Glossary of Mining Terms - Coal Education

Glossary of Mining Terms ... A tunnel (as opposed to an adit) must pass completely through a hill or mountain. U. Ultimate analysis - Precise determination, by chemical means, of the elements and compounds in coal. Undercut - To cut below or undermine the coal face by chipping away the coal by pick or mining machine. In some localities the ...

How to build a mine - MINING.COM

Mar 24, 2017· If the mine access is via an adit or decline, then this is easier to get started, requires less equipment, expertise, less development to open up the first stopes for mining and less capital.

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.

MINE SHAFT AND ADIT CLOSING - eFOTG-Document Locator

MINE SHAFT AND ADIT CLOSING (No.) CODE 457 DEFINITION Closure of underground mine openings by filling, plugging, capping, installing barriers, gating or fencing. PURPOSE • Reduce hazards to humans and/or animals • Maintain or improve access and/or habitat for wildlife • Protect cultural resources • Reduce subsidence problems

Adit | mining | Britannica.com

Adit, a horizontal or near-horizontal passage driven from the Earth's surface into the side of a ridge or mountain for the purpose of working, ventilating, or removing water from a mine. Where either a vertical shaft or an adit can be used to reach a mineral deposit, the generally lower cost of

Lawson Adit - Wikipedia

The Lawson Adit is a horizontal mine tunnel, or adit, on the UC Berkeley campus, near the Hearst Mining Building, dug directly through the Hayward Fault. Started in 1916, the adit is named after Andrew Lawson, one-time Dean of the College of Mining at UC Berkeley.

Practical Exploration Geology III - Adit Re-opening | Mineco

Nov 03, 2015· The miners initially cleared the entrance of vegetation and soil before shoring up the opening with wooden support. The adit was then drained and under the direct supervision of the Senior Mining Engineer the whole length of the tunnel was inspected …

Mine Tunnel Exploration Abandoned Gold Adit - YouTube

Aug 20, 2015· Exploring The DE Mine Tunnel and Cave - Duration: ... 50+ videos Play all Mix - Mine Tunnel Exploration Abandoned Gold Adit YouTube; National Geographic: Big,Bigger,Biggest:Dam S02E08 ...

Eureka (Adit) Tunnel Interpretive Plan

The Plumas Eureka site, consisting of the Mohawk Mill, Eureka Tunnel and associated mine operations buildings is the most prominent and accessible cultural site. Of special recognition are the two-tramway lines, that began just near the Seventy-Six mine site and terminated adjacent to the Eureka Adit…

Adit | Definition of Adit by Lexico

'It has both a vertical shaft and an adit to an incline, which we and several mine officials entered in a small bus.' 'By May 2004, more than 10,000 tons of high-grade ore had been mined from this adit.' 'Underground mining entails sinking shafts to reach the target resource and driving tunnels and adits, either inclined or ...

Adit Mining Stock Photos and Images - alamy.com

Medieval tunnel adit exposed by modern mining in the 1950s. Old mine adit, Toboggan Creek area of Hudson Bay Mountain, Smithers, British Columbia. Adit or iron ore mine entrance used in connection with 17th century sword manufacture Allensford, north east England UK.

Secret Buried Mine Adit Surprise Find Tunnel Silver Quartz ...

Nov 16, 2017· While checking out the area for Shafts and Tunnels we stumble on an area that looks suspicious! Upon further exploring and digging we unearth the opening of an old filled in Mine Adit! Join us as ...

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