Home > Product

open pit mining through underground workings

HGT gyratory crusher

[email protected]

Based on many years of market experiences and R & D experiences, HGT gyratory crusher was produced with integration of mechanical, hydraulic, electrical, automated, intelligent control technology together. HGT gyratory crusher has many incomparable advantages such as high crushing efficiency, low production cost and simple maintenance method, which can satisfy the requirements about high efficiency and coarse crushing.

Output size : 140-250mm   Production capacity : 2015-8895T/H

SPECIFICATIONS

OPEN PIT MINING THROUGH UNDERGROUND WORKINGS

The Mining Life: Open Pit vs. Underground - MICROMINE

OPEN PIT MINING THROUGH UNDERGROUND WORKINGS

OPEN PIT MINING THROUGH UNDERGROUND WORKINGS the procedures to be followed when working or drilling within a marked area that may be underlain by underground workings; the person responsible for approving entry to a marked area should be identified; the procedures to be followed when marking out the proposed probe drilling pattern;

Open Pit and Underground | Mineral Production Activities

Either in the initial design stage, or before the end of the life of an open pit, a decision may be made to extend the life of the mine by exploiting the orebody below the economic level of open pit mining, by underground methods. Continuous production is essential, and the decision to go U/G must be made in time to complete access development so that U/G production can start as the pit is phased out.

Risk Management Strategies for Open Pit Mining Through

Historic underground workings can be a source of unexpected collapse or subsidence of ground when being mined via open pit methods presenting a safety risk to personnel and an economic risk to

Mining Through Underground Workings in Fimiston Open Pit

The pit area has been continuously worked since 1893, predominantly by underground mining methods and more recently through open cut mining. There are over 2000 km of old mine headings and numerous stopes under the open pit area. KCGM has interpreted and digitised the underground mine plans and stope sections into a common database.

Differences between underground mining and open pit mining

Apr 02, 2018· The Witwatersrand gold mine in South Africa is an excellent example of underground mining that exploits gold from ancient rocks at depths of up to 4 km underground. What is open pit mining On the other hand, open-pit mining is the most common mining and ranges from very low-priced minerals to finely disseminated gold deposits.

UNDERGROUND WORKINGS DETECTION AT THE FIMISTON

J.Jiang, K. Karunaratna, T. Jones. Kalgoorlie Consolidated Gold Mines, Kalgoorlie, Western Australia. Abstract. The Kalgoorlie Consolidated Gold Mines (KCGM) Fimiston Open Pit is located on the eastern boundary of the Kalgoorlie-Boulder City and is mining an area traditionally known as the Golden Mile. The pit area has been continuously worked since 1893, predominantly by underground mining

(PDF) Stability and access implications of open pit mining

Increasingly, mining operations are looking at developing large open pits down through old, abandoned underground workings in order to extract remnant ore left within pillar zones.

The Mining Life: Open Pit vs. Underground - MICROMINE

Aug 22, 2017· The mining life is not for everyone. Miners work long hours, often far from home, in one of the most physically-demanding positions out there. While its up to the executives, the managers, and the other stakeholders to install the best designs for an underground or open pit mine with the safety of the workers in mind along with the efficiency of the job itself, its up to the workers

Method of ventilation open-pit and underground mining

This goal is achieved by the fact that to increase the effectiveness of dust suppression and artificial ventilation of mine workings in open-pit and underground mining ventilation in the career carried out by a combination of non-isothermal free streams generated by career fans with electric and convective flows generated hydrogen by the steam generators with electrolyzers, decadent career water, while the supply to the mine and Kari is to, located on the heaps

Danger of old mine workings - Department of Mines

Mine openings. If you get too close to an open edge of workings, there is the potential to fall into the open pit or quarry, or down a steep opening. The weathered ground around these areas can subside or break away under vibrations from a vehicle or under a persons weight.

UNDERGROUND WORKINGS DETECTION AT THE

Fimiston Open Pit is now mining through a dense network of underground development workings with open and filled stopes of varying sizes. Figure 1 is a photo taken from the pit showing some open and filled stopes intersecting with pit slope. . Figure 1. Open and filled stopes intersecting with pit slope (the batter is 20 m high).

Mining Sites: The Transition from Open-Pit to Underground

Jul 10, 2019· Open-Pit Mining. Open-pit mining can also be identified as open-cast or open cut mining. The practice operates above ground, always at the surface, extracting minerals and rocks from the surface. Open-pit mining presents fewer dangers in comparison to underground mining - these surface mines do not need to tackle issues such as air loss and

Strip Mining - an overview | ScienceDirect Topics

9.05.1.2.1 Mine workings and open pits Minerals are typically excavated by underground mining, strip mining , or open-pit mining. The selection of the mine design is dictated by the physical structure and value of the ore body and by the characteristics of the adjacent geological materials.

Underground Mining - Mining North Works

Underground mining is more complex and more expensive than open-pit mining. Where removing the overburden would be too costly or ineffective to reach the ore, the decision is made to go underground. After open-pit mining is complete, valuable ore can be mined through underground mining methods.

underground mining through open pit - Domy s tradicí

Mining Through Underground Workings in Fimiston Open . The pit area has been continuously worked since 1893, predominantly by underground mining methods and more recently through open cut mining. There are over 2000 km of old mine headings and numerous stopes under the open pit

Blast vibration damage to underground coal mines from

Dec 01, 2002· 3.2. Instrumentation in underground workings. The selected area in each underground working for instrumentation was in the direction of advancing face of open-pit working and within 200 m from the open-pit working faces, This was done with an anticipation that opencast blast will come nearer and nearer and one day it may be over the instrumented panel.

Mining - Underground mining | Britannica

In open-pit mines this consists of building access roads and stripping the overlying waste material in order to expose the ore and establish the initial bench geometries. For an underground mine the development stage is considerably more complicated. Some of the development components of an underground mine are illustrated in the figure.

Basics of an open pit mine - Mine Engineer.Com

Open pit mines can be used in coal mining, and they are used extensively in "hard rock" mining for ores such as metal ores, copper, gold, iron, aluminum, and many minerals. In a open pit coal mine, the pit bottom would be the bottom mined coal seam elevation, since it is usually feasible to extract multiple seams when surface mining coal.

What is Underground Mining? (with pictures)

Dec 11, 2020· Underground mining is a technique used to access ores and valuable minerals in the ground by digging into the ground to extract them. This is in contrast with techniques like open pit mining, in which the surface layers of ground are scooped away to access deposits, or mountaintop removal, in which the top of a mountain is simply shaved off to access the ore inside.

Ten technologies with the power to transform mining

Mining is being increasingly carried out underground as open pits near the end of their mining life and new ore bodies are increasingly being identified deep underground. Constructing underground mines with the use of conventional shaft and tunnel boring machines, however, has proved to be technically challenging, expensive and sluggish.

Worley out to help miners on their open pit to underground

Worley out to help miners on their open pit to underground mining transition. As open-pit mines reach their economic end of life, mine owners are considering the viability of transitioning their open-pit operations to underground. Drawing on its deep level mining expertise in South Africa, Worley helps mine owners around the world to explore the feasibility of underground life of mine extensions and identify

Two northern B.C. gold mines poised to start digging

Mar 30, 2020· With gold bouncing above a six-year high of US$1,600 per ounce and holding steady so far through the COVID-19 crisis, greater attention is now placed on two gold-mining

Surface mining - Wikipedia

Surface mining, including strip mining, open-pit mining and mountaintop removal mining, is a broad category of mining in which soil and rock overlying the mineral deposit (the overburden) are removed, in contrast to underground mining, in which the overlying rock is left in place, and the mineral is removed through shafts or tunnels.. Surface mining began in the mid-16th century [dubious

Underground Mining Through Open Pit

Mining Through Underground Workings in Fimiston Open Pit. The Kalgoorlie Consolidated Gold Mines (KDXN) Fimiston Open Pit is located on the eastern boundary of the Kalgoorlie-Boulder City and is mining an area traditionally known as the Golden Mile.