shaft sinking at mindola 1 shaft

'Flatreef' at Platreef marks the start of PGM revolution

Nov 27, 2018As shaft-sinking advances, two additional shaft stations will be developed at mine-working depths of 850 m and 950 m. Shaft 1 is expected to reach its projected, final depth of 980 m below surface, complete with the stations, in early 2020. Excavation of the adjacent Shaft 2 box cut to a depth of approximately 29 m below surface also is Get price

MINERA~1 Record

Pipe 1 shaft sinking commenced on Pi 9. The three-compartment shaft was completed to 1 785 feet in 1969, with levels at 300-foot intervals from 300 to 1 500 feet inclusive (Exploration Staff, INCO, Thompson, Nov. 6, 1975). A loading pocket was established at 1,680 feet. Mining was carried out at all levels below 300 feet using a shrinkage stope Get price

Shaft vs. Ramp Access

Figure 1 shows a general layout of what it required in a shaft access and handling system. In most cases the task of shaft sinking is allocated to a contractor who can usually advance between 3 and 5 vertical meters per day . As can also be seen from this diagram, an ore pass exists which utilizes gravity to transport material from each level Get price

Shaft sinking 1

May 26, 2016Shaft sinking 1 1. SHAFT SINKING 2. SHAFT SINKING Rajiv Gandhi College Of Engineering, Research Technology PRESENTED BY : SUNIL D. WASADE Guided By Prof. B.K. KHADE H.O.D. Dr. M.D. Uttarwar Mining Engineering 2015-2016 3. CONTENTS Introduction Definition Aim of the project Objective of project Purpose of shaft sinking Design of mine shafts Get price

mopani completes its $320 million synclinorium shaft project.

Meanwhile many works on the project have already been completed. These include inter alia; construction of the Shaft Collar, which marked the first milestone in December 2011 and opened the way for further pre-sink works, construction of a 1.5MW power substation, Piling Phase 1, fencing and construction of drainage around the project site, building of terraces, road diversions, Batch Plant and Get price

PLATINUM GROUP: Ivanhoe begins sinking 1,025

Jul 14, 2016The shaft sinking contract includes two main stations at depths of 450 and 1,200 metres. The Flatreef deposit will be intersected at 777 metres below the surface. The Flatreef deposit has an indicated resource of 346 million tonnes grading 3.77 g/t 3PE+Au, 0.16% Cu and 0.32% Ni. There is also an inferred resource of 506 million tonnes grading 3 Get price

Three Companies, One Solution

Depth is an internal shaft project (winze) that has just commenced sinking. The shaft is accessed via the Craig mine shaft and the shaft collar is located approximately 1,230 metres below surface. It is a 7.2-metre diameter concrete-lined shaft that will provide access and ventilation TWO DAYS WEDNESDAY, NOVEMBER 20 THURSDAY, NOVEMBER 21 CORPORATE Get price

Shaft vs. Ramp Access

Figure 1 shows a general layout of what it required in a shaft access and handling system. In most cases the task of shaft sinking is allocated to a contractor who can usually advance between 3 and 5 vertical meters per day . As can also be seen from this diagram, an ore pass exists which utilizes gravity to transport material from each level Get price

tunnels and underground excavations

Tunnels and underground excavations, horizontal underground passageway produced by excavation or occasionally by nature's action in dissolving a soluble rock, such as limestone.A vertical opening is usually called a shaft.Tunnels have many uses: for mining ores, for transportation—including road vehicles, trains, subways, and canals—and for conducting water and sewage. Get price

Considerations for large

– 5.5 m diameter, ~1,500 m deep when complete (Martin et al. 2012) and the Mindola Deeps project in Zambia which is currently under construction – 6.1 m diameter, ~2,000 m deep (Sidler 2014). Other commonly used excavation methods for completing vertical development include blind shaft sinking, Get price

Publications

Protection Devices for Sinking Shafts : L R McAdam - Kloof Mine : Askania Control as Applied to G H H Compressors an Account of an Inherent Fault in the Control of a Machine Installed at Randfontein Estates Gold Mining Company (Witwatersrand) Ltd Major Shaft Accidents No. 1 Shaft East Driefontein: G R W Mills: Failure of No. 2 Denag Turbo Get price

MINERA~1 Record

Pipe 1 shaft sinking commenced on Pi 9. The three-compartment shaft was completed to 1 785 feet in 1969, with levels at 300-foot intervals from 300 to 1 500 feet inclusive (Exploration Staff, INCO, Thompson, Nov. 6, 1975). A loading pocket was established at 1,680 feet. Mining was carried out at all levels below 300 feet using a shrinkage stope Get price

2020 News

Platreef successfully completes sinking of Shaft 1 to its final depth of approximately 1,000 metres below surface. Mine development work now focused on equipping Shaft 1 as Platreef's initial production shaft. Project team achieves South African shaft-sinking industry leader status for safety performance . Get price

Concept Paper on Shaft Sinking of the Mine Trepca in

Duration of shaft sinking is 1.6 years Main shaft The main shaft begins to open from the central construction site and the advance from the up-down. Originally there is opened a narrow space in the size of the stack dimension 2.5 x 2.5 m to the exit of the existing shaft, then begins the expansion of the existing shaft with bore holes drilled Get price

[PDF] Shaft Sinking Part3

2.2.5 Shaft Sinking Winding Designed for vertical shaft sinking and development, these winders are often used in conjunction with stage winders which support a movable working platform called a stage. See Part 4, Section 6 for special additional features which may be required when vertical shaft drum winders are intended for shaft sinking duties. Get price

UK first for shaft sinking innovation at 4.2bn potash

These include the UK's first use of an innovative vertical shaft sinking machine (VSM) and the longest ever conveyor belt. The project will also be the first time in the world the VSMs will be used to a depth of 120m. To construct the lower depths of the shaft, the project will use a new shaft boring roadheader (SBR), used only once before in Get price

'Flatreef' at Platreef marks the start of PGM revolution

Nov 27, 2018As shaft-sinking advances, two additional shaft stations will be developed at mine-working depths of 850 m and 950 m. Shaft 1 is expected to reach its projected, final depth of 980 m below surface, complete with the stations, in early 2020. Excavation of the adjacent Shaft 2 box cut to a depth of approximately 29 m below surface also is Get price

Basil Maddocks

1. 9,2 Mt/a coal mine infrastructure development 2. Shaft Systems( vertical shafts – one man and material and one ventilation and a decline shaft) 3. 10,5 Mt/a material handling system 4. Surface and underground buildings and structures 5. Water management system (potable, service, storm and fire etc.) 6. MV and LV electrical distribution Get price

York Potash sets vertical shaft sinking record

The machine reached a total depth of 115.2m in May 2019, surpassing the previous world record of 84m previously set in St Petersburg. Chris Fraser, Managing Director and CEO of Sirius Minerals said: "Using this cutting edge machine is proof of our determination to use the best, most effective engineering solutions to build this mine and the successful completion of the vertical shaft sinking Get price

History of Mining: The evolution of shaft sinking systems

Jan 12, 2015All these changes, although slow in coming, drastically increased the speed of shaft sinking. Summarizing the average sinking speeds from the various periods clearly illustrates the changes in technology over time and the resulting increase in sinking rates. Prior to 1600 AD — 1 to 1.2 metres per month Get price

Marine Engines : Engine

Runout up 1/8 is acceptable at idle speeds but not at cruise. If shaft wobble is visible over 1200 RPM, suspect a problem. Again, that's becasue rotating shafts tend toward self-centering. At high speed enven bent shafts can straighten out and show no sign of trouble. Get price

DRILLED SHAFT FOUNDATION CONSTRUCTION INSPECTION

In general, drilled shafts will have a higher resistance against axial and lateral loads than driven piles. The additional capacity is a result of the size of the drilled shaft. Drilled shaft diameters can range from 1 to 10 feet, and lengths up to 150 feet can be achieved using common drilled shaft Get price

History of Mining: The evolution of shaft sinking systems

Jan 12, 2015All these changes, although slow in coming, drastically increased the speed of shaft sinking. Summarizing the average sinking speeds from the various periods clearly illustrates the changes in technology over time and the resulting increase in sinking rates. Prior to 1600 AD — 1 to 1.2 metres per month Get price