Abstract. A coal-mining auger having (a) a hollow, tubular auger head with a spiral or helical coal conveyor mounted therein in concentric relation to the axis of rotation of said auger head, (b) a plurality of coal-cutting bits mounted on said auger head, said bits being orbitally movable with the auger head in circular paths concentric with said axis of rotation, said bits being also concurrently rotatable about
Use Of Augers In Surface Mining Of Bituminous Coal
Abstract. Auger mining of coal, developed since World War II, produces 6 million tons of coal a year, according to this report based on field studies of 8 auger-mining operations in 5 different coal beds, Upper Freeport and Upper Kittanning beds in Pennsylvania, Lower and Upper Kittanning, Pittsburgh, and Winifrede beds in West Virginia, and Pittsburgh (No. 8) bed in Ohio.
Auger Mining Mininginfo
Auger mining is a method for recovering coal by boring into a coal seam at the base of strata exposed by excavation. Normally one of the lowest-cost techniques of mining, it is limited to horizontal or slightly pitched seams that have been exposed by geologic erosion.
Coal Mining Auger Castanoli Alder F
For example, although the primary function of the claimed auger is to mine coal, it is equally suited for extracting other materials such as potash, sulphur, salt, bauxite, clay and various ores. The invention is also applicable to tunnelling per se, without regard to the recovery of minerals.
Us4159149a Coal Mining Auger Google Patents
A coal-mining auger having (a) a hollow, tubular auger head with a spiral or helical coal conveyor mounted therein in concentric relation to the axis of rotation of said auger head, (b) a plurality of coal-cutting bits mounted on said auger head, said bits being orbitally movable with the auger head in circular paths concentric with said axis of rotation, said bits being also concurrently ...
A New Underground Auger Mining System
Development Corporation, Auger Mining South Africa and Cutting Edge Technology Pty Ltd (CET) saw a BryDet Model 2348-72 Coal Recovery Auger introduced into South Africa in August 1997. Operational performance data, from the BryDet 2348-72, was analysed to quantify the influence of cutter head diameter, coal type and penetration depth upon mining rates.
Auger Mining Definition Law Insider
Auger mining means a method of mining coal at a cliff or high-wall by drilling holes into an exposed coal seam from the high-wall and transporting the coal along an auger bit to the surface. Related to Auger mining. Surface mining means all, or any part of, the process involved in the mining of minerals on mined lands by removing overburden and ...
Us2940740a Multiple Head Coal Mining Auger Google Patents
US2940740A US722700A US72270058A US2940740A US 2940740 A US2940740 A US 2940740A US 722700 A US722700 A US 722700A US 72270058 A US72270058 A US 72270058A US 2940740 A US2940740 A US 2940740A Authority US United States Prior art keywords auger coal machine angers strings Prior art date 1958-03-20 Legal status (The legal status is an assumption and is not a legal
A New Underground Auger Mining System
Development Corporation, Auger Mining South Africa and Cutting Edge Technology Pty Ltd (CET) saw a BryDet Model 2348-72 Coal Recovery Auger introduced into South Africa in August 1997. Operational performance data, from the BryDet 2348-72, was analysed to quantify the influence of cutter head diameter, coal type and penetration depth upon ...
Analysis Of Highwall Mining Stability The Effect Of
coal production representing about 4% of the U.S. total production. In addition to being a very productive and economic coal production method, analysis shows that auger and highwall mining appears to be as safe as surface coal mining (6). However, there are geotechnical considerations with
445 Mining Auger Photos Free Royaltyfree Stock
Your Mining Auger stock images are ready. Download all free or royalty-free photos and images. Use them in commercial designs under lifetime, perpetual worldwide ...
Coal Auger Dsi Underground Australia
38mm drill bit diameter. Robust two wing drill bit for dry drilling larger diameter holes in soft to medium conditions. The positive front rake assists in penetration with low thrust machines while the concentric tips minimizes drill rod wander. These drill bits have been designed for dry drilling in
Coal Auger Machines
Coal auger machines Products. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any size-reduction requirements including, Coal auger machines, quarry, aggregate, and different kinds of minerals.
Auger Mining System Cutting Edge Technology Pty Ltd
The mined coal provided by the auger mining machine 18 is delivered to the conveyor 17. In this respect, it should be appreciated that the conveyor 17 passes beneath the auger mining machine 18 so that the coal mined thereby falls onto the conveyor 17.
Mobile Coal Auger Sampling Systems Equipment Uni
Johnson Industries is proud to introduce a coal auger sampling system known as the Mobile UNI-SAMPLER, which has gained a worldwide reputation. The Mobile Uni-Sampler is a coal sampler that was developed to retrieve coal samples for testing from coal trucks, rail cars, and river or ocean barges by using an auger bit.
Geotechnical Study Of Auger Mining Of Coal Pillars
articleosti_5955088, title Geotechnical study of auger mining of coal pillars, author Chugh, Y P and Caudle, R D and Agarwala, V K, abstractNote In recent years, the US Department of Energy and the US Bureau of Mines have been developing underground augering machines to be used for coal pillar extraction in retreat mining. Now a bidirectional auger machine has been designed ...
Us6817678b2 Auger Mining System Google Patents
A mining apparatus 10 to mine coal from a seam 11 . The apparatus 10 includes a continuous miner 12 to form a mine road 13 . Extending along the road 13 is a conveyor 15 having a forward end 20 to which the mined material from the continuous miner 12 is delivered. The apparatus 10 further includes an auger mining machine that advances an auger drill string 28 into the coal seam 11 in a ...
Us2948520a Auger Boring Machine For Mining Coal
Auger boring machine for mining coal Download PDF Info Publication number US2948520A. US2948520A US532873A US53287355A US2948520A US 2948520 A US2948520 A US 2948520A US 532873 A US532873 A US 532873A US 53287355 A US53287355 A US 53287355A US 2948520 A US2948520 A US 2948520A Authority US United States Prior art keywords auger supporting
Geomechanical Substantiation Of The
auger mining of coal reserves is to substantiate the parameters of this technology, especially the stability of interwell and supporting pillars, which are formed to prevent roof caving when drilling out coal from the seam. In mining, significant attention is paid to determining the parameters of pillars in terms of the safety of mining ...
Surface Auger Mining At Rietspruit Mine Services Pty Ltd
years to mine coal reserves exposed on the high walls created during surface mining. The auger mining system was initially developed in the early 1940s in the United States of America. High wall mining is a method of recovering coal from seam exposed either by mechanical excavation methods or natural erosions.
Coal Mining And The Highwall Method
Nov 26, 2010 The mining head can oscillate up and down as it moves forward into the coal, thus mining seams that are larger in size than the machine itself
Surface Mine Permits Open As Of 1212020
bundy auger mining, inc. bam 7 auger s0300718-a 4609052 nicholas 4 bundy auger mining, inc. shm46 highwall miner s0300218-b 4609151 nicholas 4 cardinal mining group, llc garland surface mine s0400507-d 4609426 mcdowell 2 carter roag coal company hartridge mine no. 1
Code Of Virginia Code Article 12 Auger And Highwall Mining
Oct 01, 2021 A mine foreman shall inspect the face of each highwall for a distance of 25 feet in both directions from an auger or highwall miner operation (i) before any such operation begins and at least once during each coal producing shift and (ii) frequently during any period of heavy rainfall or intermittent freezing and thawing.
The mine utilizes the auger method of mining, extracting coal from the Elkhorn 3 Rider seam, which averages 20 inches in thickness. Mining is performed with a Model S-1500-B, single- head coal auger, manufactured in 1984 by Salem Tool, Inc. This auger is equipped with two diesel engines.
Stationary Coal Auger Sampling Systems Equipment Uni
Johnson Industries is proud to introduce a stationary coal auger sampling system known as the UNI-SAMPLER, which has gained a worldwide reputation. The Stationary Uni-Sampler is a coal sampler that was developed to retrieve coal samples for testing from coal trucks, rail cars, and river or ocean barges by using an auger bit.
Msha Fatalgrams For The Coal Mining Accident On August
COAL MINE FATALITY - Tuesday, August 27, 2002, a 40-year-old coal auger operator died after he entered a 30-inch diameter auger hole that he was drilling. The auger had penetrated two previously drilled auger holes. The victim entered the hole to determine the