Longitudinal longhole methods are very well suited to retreat mining, and can be planned such that development occurs within the ore itself, reducing development costs,
longitudinal retreat mining method. longitudinal retreat mining method Eagle Mine215 Кб This method provides the cost advantages of bulk mining . Get Price And Support Online; Eagle Mine Lundin Mining. Mine facilities and method The orebody is accessed from surface by decline mined . Mining Operations Eagle Mine is an underground
F, 2012. The Obuasi mine longitudinal retreat mining method application and challenges, in Proceedings Narrow Vein Mining 2012, pp 59-70 (The Australasian Institute of Mining
This method consists in a variety of chambers where the mine blocks are generally cut by sub-levels from which long holes are drilled in plans that are generally parallel. These boreholes allow to blast the block by successive vertical break. The broken ore is mucked out by drawpoints or by longitudinal retreat.
Mining retreats horizontally as successive vertical slices are blasted. Vertical block mining is the term most often used for this method. In VBM the workplace is divided into a series of vertical blocks and the blocks may be nined on a retreat basis working from the ends of the workplace.
A longitudinal retreat long-hole mining method was selected for the Triangle zone based on the orebody characteristics, including grade, dip, continuity, thickness, etc. Although some part of the C-zones have hanging walls dipping shallowly (as low as 43 degrees), the approach in this study has been to promote the application of long-hole
Long-hole open stope is the mining method used at the 777 mine. Mine sequencing involves primary, secondary, chevron and longitudinal retreat stopes that are either paste or unconsolidated loose waste rock backfilled. Long-hole stopes are mined at 15 metre to 17 metre vertical sill to sill intervals.
2) Room (Bor d)-and-Pillar mining (or con tinuous mining) method It is the most common supported pillar method, designed and used primarily for mining flat-lying
Feb 10, 2018· Black Diamond Drilling Services Australia Database
Mining Method(s): Longitudinal retreat with cemented rock or paste backfill, and transverse open stoping with cemented rock backfill, paste or unconsolidated backfill. Processing Method(s): LaRonde mineral processing complex, which includes copper and
Mining retreats horizontally as successive vertical slices are blasted. Vertical block mining is the term most often used for this method. In VBM the workplace is divided into a series of vertical blocks and the blocks may be nined on a retreat basis working from the ends of the workplace.
longitudinal retreat mining method greenrevolution.in. Eagle Mine215 Кб. This method provides the cost advantages of bulk mining, while maintaining a degree of selectivity and operational flexibility. The majority of the stopes will be mined as transverse bench and fill stopes, with some thinner thickness zones of the orebody mined as
Lapa Mining Method 26m Longitudinal Retreat AGNICO EAGLE 4.2m . Title: PowerPoint Presentation Author: George Dikho Created Date: 3/1/2013 10:26:46 AM
Oct 31, 2019· This course refers to the generic mining method of sublevel stoping. The most commonly used sublevel stoping mining methods are sublevel open stoping, long-hole open stoping or blasthole stoping, and vertical crater retreat (VCR). Variations of this method include vein (Alimak) mining, transverse stoping, Avoca and longitudinal mining. Sublevel stoping accounts for more than 60% of
Mar 09, 2018· Selecting a Mining Method. Some common ones include longitudinal stoping, transverse longitudinal stoping, big-hole stoping, and vertical crater retreat. Longitudinal stoping, also referred to as bench stoping or sublevel benching is a preferred method when the orebody is thin and narrow and steeply dipping and sheet-like. Transverse
Mar 23, 2014· Longitudinal longhole retreat is a branch of the generic mining method known as sublevel stoping and often requires the development of a rise or slot prior to production blasting.
Longhole Stoping is a popular large scale underground mining method for metalliferous mine known for its ability to simplify stope sequencing. in the centre of the mining block with retreats
Two mining methods are used at LaRonde: longitudinal retreat with cemented rock or paste backfill; and transverse open stoping with cemented rock backfill, paste or unconsolidated backfill. In addition, to address concerns regarding the frequency and intensity of seismic events encountered at the lower levels of the LaRonde mine, a hybrid of
The mining method mostly used is a transverse primary and secondary longhole method. Usually, the development is done two years in advance of the production schedule. Therefore, when narrower areas are encountered in these sectors, the mining method generally used to recover these stopes is the longhole retreat method.
This course refers to the generic mining method of sublevel stoping. The most commonly used sublevel stoping mining methods are sublevel open stoping, longhole open stoping or blasthole stoping, and vertical crater retreat (VCR). Variations of this method include vein (Alimak) mining, transverse stoping, Avoca and longitudinal mining. Get Price
Aug 05, 2020· MINING METHOD. Long-hole open stoping ("LHOS") is the primary mining method used at Westwood. Stopes are approximately 25 to 30 metres high with
Retreat mining (below) is an example of a process like this. Retreat mining. Retreat mining is often the final stage of room and pillar mining. Once a deposit has been exhausted using this method, the pillars that were left behind initially are removed, or "pulled", retreating back towards the mine's entrance.
Mining at Kamoto mine. Room and pillar, transversal longhole retreat with back-fill, and longitudinal longhole retreat with back-fill are currently applied at the Kamoto underground mine. Room and pillar method is employed at the OBS and OBI horizons, while the access drives are constructed along strike on the hanging wall contact.
Two mining methods are used at LaRonde: longitudinal retreat with cemented rock or paste backfill; and transverse open stoping with cemented rock backfill, paste or unconsolidated backfill. In addition, to address concerns regarding the frequency and intensity of seismic events encountered at the lower levels of the LaRonde mine, a hybrid of
Aug 05, 2020· MINING METHOD. Long-hole open stoping ("LHOS") is the primary mining method used at Westwood. Stopes are approximately 25 to 30 metres high with
Oct 31, 2019· This course refers to the generic mining method of sublevel stoping. The most commonly used sublevel stoping mining methods are sublevel open stoping, long-hole open stoping or blasthole stoping, and vertical crater retreat (VCR). Variations of this method include vein (Alimak) mining, transverse stoping, Avoca and longitudinal mining. Sublevel stoping accounts for more than 60% of
Lapa Mining Method 26m Longitudinal Retreat AGNICO EAGLE 4.2m . Title: PowerPoint Presentation Author: George Dikho Created Date: 3/1/2013 10:26:46 AM
This course refers to the generic mining method of sublevel stoping. The most commonly used sublevel stoping mining methods are sublevel open stoping, longhole open stoping or blasthole stoping, and vertical crater retreat (VCR). Variations of this method include vein (Alimak) mining, transverse stoping, Avoca and longitudinal mining. Get Price
longitudinal retreat mining method Grinding Mill China. endeavour mining cotdvour Menghancurkan Peralatan. Assmang Manganese Mines, Northern Cape, endeavour mining cotdvour longitudinal retreat mining method what is the process of mining galena next:quartz stone crusher mesin es batu kristal mining of mineral resources and problems
coal mine workwear, coal mine workwear Suppliers and mens button-front orange reflective industrial coal mining workwear. 6 YRS . Quanzhou Sona Import & Export Trading Co., Ltd. (5) 93.9% " Good job " (1) Contact Supplier ··· mens button-front orange reflective industrial coal mining workwear Materials T/C in different proportion Size(EUR/USA) XS S M L XL XXL XXXL XXXXL Packing 1 pc in
Mining at Kamoto mine. Room and pillar, transversal longhole retreat with back-fill, and longitudinal longhole retreat with back-fill are currently applied at the Kamoto underground mine. Room and pillar method is employed at the OBS and OBI horizons, while the access drives are constructed along strike on the hanging wall contact.
Retreat mining (below) is an example of a process like this. Retreat mining. Retreat mining is often the final stage of room and pillar mining. Once a deposit has been exhausted using this method, the pillars that were left behind initially are removed, or "pulled", retreating back towards the mine's entrance.
The mining method employed is long hole retreat stoping, utilising up and down holes with artificial concrete pillars. Stawell is currently mining the Golden Gift and Magdala orebodies. Figure 3 longitudinal section of the blast. The wall was painted by a Geologist to indicate the ore/waste boundary.
The mining methods are longitudinal retreat with paste-backfill, and transverse open-stoping with paste or unconsolidated backfill. All of the ore is trucked to the surface before being trucked to the LZ5 ore processing plant. The LZ5 ore processing plant processes 2,000 tonnes of ore per day. The plant consists of a two-stage grinding circuit
Jul 17, 2018· The mining method selected is long-hole with longitudinal retreat on panels with minimum dimensions of 20 (length) x 20 (height) metres and minimum thicknesses of 3.5 to 4.0 metres. Mineralized material will be extracted using a fleet of 14 tonne load-haul-dumps (“LHDs”) and 50 tonne haul trucks using a ramp at a rate of 2600 tpd.
modified AVOCA mining method for the majority of its’ mining in retreats without secondary access. Using this method, each blast is backfilled and waste is removed from the backfilled stope (void pull) to create a void for the next blast. As the blast follows the ore body down, the increasing depth, strike length and number of lifts contributes
Stoping is the process of extracting the desired ore or other mineral from an underground mine, leaving behind an open space known as a stope. Stoping is used when the country rock is sufficiently strong not to collapse into the stope, although in most cases artificial support is also provided.. The earliest forms of stoping were conducted with hand tools or by fire-setting; later gunpowder
Copyright © 2004-2020 by SKD Industry Science and Technology Co. LTD All rights reserved , sitemap.xml