our products

D&Q Mining is a high-tech company integrating R&D, production and sales. It provides mature products and solutions such as crushers, sand making, milling equipment, mobile crushing stations, etc., for aggregate, mining and waste recycling.

to mine horizontal gold reefs

to mine horizontal gold reefs – Grinding Mill China

to mine horizontal gold reefs [ 4.6 - 4559 Ratings ] The Gulin product line, consisting of more than 30 machines, sets the standard for our industry. We plan to help you meet your needs with our equipment, with our distribution and product support system, and the continual introduction and updating of products. Related Posts » used jaw crusher for sale in coimbatore » impact type coal ...

More

Quartz reef mining - Wikipedia

Mining the ore usually required mine shafts sunk to mine quartz from the reefs, sometimes deep underground. Horizontal tunnels called drifts were dug out from the shaft at different levels to find the gold-bearing rock. All the ore was hoisted to the surface for processing. Water had to be removed by pumping. Big hoisting engines were installed to hoist lifts and buckets up the shafts.

More

Quartz Reef Mining, Mining Techniques, Surface Mining ...

A Prussian engineer, Jacob Brache was the foremost to feel that quartz reefs may have even more gold than alluvial fields. The novel mining firms had to sink very profound shafts to get quartz from the reefs profound underground. Horizontal tunnels known as drives were dug out from the shaft at dissimilar levels to discover the gold-bearing rock.

More

Spectacular Reef Gold - YouTube

22/12/2015  Out on the gold and managed to stumble across a nice run of reef gold. Hope you like some of the great pictures of the specimen gold.

More

(PDF) Gold-bearing reefs of the Witwatersrand Basin: A ...

Gold-bearing reefs of the Witwatersrand Basin: A model of synsedimentation hydrothermal formation . December 2006; Geology of Ore Deposits 48(6):415-447; DOI: 10.1134/S1075701506060018. Project ...

More

Gold Project Inventory - Gold in Ironstone and Quartz Reef ...

The Mount Poole Marvel Gold Mining Company was formed in 1891 initially to operate the Marvel reef, near Mt. Poole, which was reported to be 0.76 m. wide at surface and 1.32 m. wide at a depth of 5.2 metres. Initially bulk samples from the 5 m. level were sent to Sydney for test crushings; 4.32 tonnes of quartz yielded 90.4 gm. Au/tonne, and 1.83 tonnes of rubble yielded 127 gm. Au/tonne ...

More

High Grade Gold at Nuggetty Reef Mine No. of Pages: 8

19/10/2012  and east reef that are linked at depth by a near-horizontal flat reef (Figure 2). The Nuggetty Reef was discovered in 1856 and in the following ten years produced 301,000 ounces of gold from 50,000 tonnes of ore at an average grade of 187 g/t Au. During this period the reef was mined over 350 metres strike length by nine companies, with four deep shafts sunk to a maximum depth of 238

More

GOLD REEF Hunting - YouTube

14/07/2016  Following a line of ragged reef gold to find the source.Music: “In The Field”By: audionautix/License: creativecommons.org/licenses/b...WEBS...

More

What alluvial gold mining?? and what is deep reef mining ...

01/09/2009  Deep Reef mining is extraction of gold from the rock itself. The reefs are ususlly very steep and extend deep inside the earth. The miners follow this gold bearing reef by digging intricate system of vertical shafts, and horizontal drives to mine out the gold. This method of gold mining is practiced in most modern and large gold mines. Some of these mines extend as deep as 4 km below

More

Non-explosive rock breaking: Mining all of the reef, all ...

21/01/2020  South Africa’s reef deposits, especially gold and platinum-bearing ore bodies, are narrow and tabular. While legislation dictates a minimum operation height of 800 mm in areas where people work, some of the country’s narrow reef mines have ore bodies with thicknesses of less than 500 mm, which results in ore dilution, as waste ore with zero economic value is also mined. “Mining is the ...

More

Assessment of current mining strategy J for steep reefs at ...

Reefs steeper than 35° were discovered when production commenced at the mine. At that time reefs steeper than 35° were not popular in South African tabular gold mines, therefore new techniques of mining them had to be developed. The underhand mining method was chosen for this purpose.

More

Wits Basin’s shallow gold reefs to be ... - Mining Weekly

Shallow Reefs Gold is targeting 200 000 oz/y gold production from virgin reef over the next decade from a pipeline of “well-known, high-quality shallow gold deposits” in the Witwatersrand Gold...

More

High Grade Gold at Nuggetty Reef Mine No. of Pages: 8

19/10/2012  and east reef that are linked at depth by a near-horizontal flat reef (Figure 2). The Nuggetty Reef was discovered in 1856 and in the following ten years produced 301,000 ounces of gold from 50,000 tonnes of ore at an average grade of 187 g/t Au. During this period the reef was mined over 350 metres strike length by nine companies, with four deep shafts sunk to a maximum depth of 238

More

What alluvial gold mining?? and what is deep reef mining ...

01/09/2009  Deep Reef mining is extraction of gold from the rock itself. The reefs are ususlly very steep and extend deep inside the earth. The miners follow this gold bearing reef by digging intricate system of vertical shafts, and horizontal drives to mine out the gold. This method of gold mining is practiced in most modern and large gold mines. Some of these mines extend as deep as 4 km below

More

Gold Reef City gold tour - Mine underground tours and museum

Thus traveling down a Gold Mine shaft – Gold Reef City. Gold Reef Shaft No 14, in production for 84 years – 1887 to 1971 and indeed, at its time, the deepest mine in the world. Then travel down the Gold Mine shaft (under 5 years not allowed) in a large clangy lift to level 5 – 720 feet (226 meters) for a guided gold mine tour. Walk down tunnels with a hard hat and a torch in hand and so ...

More

Gold Reef City - Wikipedia

Gold Reef City is an amusement park in Johannesburg, South Africa.Located on an old gold mine which closed in 1971, the park is themed around the gold rush that started in 1886 on the Witwatersrand, the buildings on the park are designed to mimic the same period.There is a museum dedicated to gold mining on the grounds where it is possible to see a gold-containing ore vein and see how gold is ...

More

Union Reefs Gold Mine - geoscience.nt.gov.au

UNION REEFS GOLD MINE . Year Ending 31 December 2009 . Pine Creek 1:100,000 . Pine Creek 1:250,000 . DISTRIBUTION: DOR Darwin, NT . Crocodile Gold Australia Humpty Doo . Brocks Creek, NT . CROC Report No: PC/BJV/09-54 . Zia U. Bajwah . January 2010 . SUMMARY . The Union Reefs Group comprises 7 tenements (MLN 1109, MLN 833, ANs 398-402) and is located about 170 km SE of

More

A long hole stoping system for mining narrow platinum reefs

A long hole stoping system for mining narrow platinum reefs Advantages of this mining method It allows for a low safety and health risk as well as improved working environment. Physical work is reduced and it is easier to motivate the workforce. Another advantage is the improvement in grade due to better control of dilution, as only the channel width of the orebody is mined. This reduces ore ...

More

Locomotive crushes 105 gold miners The Independent The ...

23/10/2011  Mangled remains wrapped in grey blankets were slowly being passed to the surface at the Vaal Reefs gold mine in Orkney, 95 miles south of Johannesburg. Some bundles took up barely a

More

Mining gold reef - YouTube

23/05/2019  16 metres under

More

Gold Project Inventory - Gold in Ironstone and Quartz Reef ...

The Mount Poole Marvel Gold Mining Company was formed in 1891 initially to operate the Marvel reef, near Mt. Poole, which was reported to be 0.76 m. wide at surface and 1.32 m. wide at a depth of 5.2 metres. Initially bulk samples from the 5 m. level were sent to Sydney for test crushings; 4.32 tonnes of quartz yielded 90.4 gm. Au/tonne, and 1.83 tonnes of rubble yielded 127 gm. Au/tonne ...

More

(PDF) Gold-bearing reefs of the Witwatersrand Basin: A ...

Gold-bearing reefs of the Witwatersrand Basin: A model of synsedimentation hydrothermal formation . December 2006; Geology of Ore Deposits 48(6):415-447; DOI: 10.1134/S1075701506060018. Project ...

More

Kolar Gold Fields - Wikipedia

Kolar Gold Fields (K.G.F.) is a mining region in K.G.F. taluk (township), Kolar district, Karnataka, India.It is headquartered in Robertsonpet, where employees of Bharat Gold Mines Limited (BGML) and BEML Limited (formerly Bharat Earth Movers Limited) and their families live. K.G.F. is about 30 kilometres (19 mi) from Kolar, 29 kilometres (18 mi) from Kuppam, 100 kilometres (62 mi) from ...

More

Theta Gold Mines Ltd confirms high-grade reef system ...

16/03/2020  TGM’s current exploration strategy is focused on near-surface oxide gold potential in both horizontal and vertical reef systems across the east Transvaal Goldfields in South Africa.

More

Assessment of current mining strategy J for steep reefs at ...

Mine A was a tabular gold mine whose reef had a complicated structure, and was found within a complex geological ground. The mine had large-scale and abundant small-scale faults with shale layers, which could cause stability problems1. The reef had been tilted by faults and had dips ranging from about 11° to 700.2 At the time of the investigation the mine was using a blend of breast mining ...

More

Our Story - Theta Gold Mines

The tenements are held by Transvaal Gold Mining Estate Ltd (TGME), South Africa’s first incorporate gold mining company (1895). The regional project is know as TGME Project in honour of it historical roots and important to South African gold Industry. The Company plans to start production from the Theta Starter-pits within Mining Right 83. The TGME Project has more than 43 historical mines ...

More

Wits Basin’s shallow gold reefs to be ... - Mining Weekly

04/11/2020  The success story being emulated by Shallow Reefs Gold is that of Modder East gold mine, a 1.2-million-ounce, 3.9 g/t in situ Black Reef deposit 350

More

Monday Geology Picture(s): Gold Reef City-- Underground ...

11/03/2013  For a few weeks, I’m sharing some pictures from a visit to Gold Reef City, a gold mining themed amusement park in Johannesburg, South Africa, back in September 2012. Last week I shared some pictures of the mining-themed entrance. This week I am sharing some pictures from the underground mine tour. The park is located on the site of an old gold mine. Now that water is no

More

Wits Basin’s shallow gold reefs to be mined as economic ...

04/11/2020  The success story being emulated by Shallow Reefs Gold is that of Modder East gold mine, a 1.2-million-ounce, 3.9 g/t in situ Black Reef deposit 350 m below surface, which was turned to profitable account by current Sibanye-Stillwater CEO Neal Froneman, despite the gold grades being well below those of the Witwatersrand’s celebrated deep-level mines.

More

Blanket Gold Mine - Caledonia Mining Corporation plc

Early workers tended to mine the visible gold sections of the pay shoots, i.e. pick the “eyes” out of the mine. Significant early production milestones were: in 1965 Falconbridge acquired the property and increased gold production to an average of approximately 45 kg per month; in 1993 Kinross took over the property and built an enlarged Carbon-in-Leach (“CIL”) plant with capacity of ...

More

Gold Fields South Deep Gold Mine - How we mine

The reef horizon (a near horizontal layer of sediment in which the gold is located) is reached through two main access drives. Stope access drives are developed at a 70-degree angle off the main access drive in a staggered pattern. The stope is the excavated area where the actual mining of the orebody takes place. The destress cut progresses in an arrow shape towards the hanging wall contact ...

More

Digging deeper: Mining methods explained Anglo American

The entry from the surface to an underground mine may be through a horizontal or vertical tunnel, known as an adit, shaft or decline. Underground mining is practical when: The ore body is too deep to mine profitably by open pit. The grades or quality of the orebody are high enough to cover costs. Underground mining has a lower ground footprint than open pit mining. What is underground mining ...

More

Gold Reef City gold tour - Mine underground tours and museum

Thus traveling down a Gold Mine shaft – Gold Reef City. Gold Reef Shaft No 14, in production for 84 years – 1887 to 1971 and indeed, at its time, the deepest mine in the world. Then travel down the Gold Mine shaft (under 5 years not allowed) in a large clangy lift to level 5 – 720 feet (226 meters) for a guided gold mine tour. Walk down tunnels with a hard hat and a torch in hand and so ...

More

Monday Geology Picture(s): Gold Reef City-- Underground ...

11/03/2013  For a few weeks, I’m sharing some pictures from a visit to Gold Reef City, a gold mining themed amusement park in Johannesburg, South Africa, back in September 2012. Last week I shared some pictures of the mining-themed entrance. This week I am sharing some pictures from the underground mine tour. The park is located on the site of an old gold mine. Now that water is no

More

Gold Fields South Deep Gold Mine - Geology

South Deep Gold Mine is a Gold Fields operation in South Africa. Visit the Gold ... The layers of sedimentary rock that contain the gold reefs are known as conglomerate reefs and these are primarily composed of rounded pebbles with the gold occurring between these rounded pebbles. A number of gold-bearing reefs have been exploited over the past 135 years at various locations within the Basin ...

More

Mining Technology: Overview - E-gold

Quartz reef mining transformed Bendigo into the Victorian goldfields region’s second provincial city – by 1870, Bendigo was the most secure mining location in Victoria. Underlying the boom was mining deeper and deeper below the surface. Geology experts had previously predicted that Australian gold would disappear at quite shallow depths, but several Bendigo companies were passing through ...

More

Mines of Australia’s Bendigo Gold Fields Geology for ...

01/03/2021  The Bendigo Gold fields are not just, after Kalgoorlie, Western Australia, the second most productive gold mining area in Australia, but also a mineral discovery that literally shaped a nation. Since 1851, approximately 25,000 oz (777 tonnes) of gold has been extracted from Bendigo, initially from alluvial gold and later from underground mining of the gold-bearing quartz reefs.

More

Discovery of the Gold in 1884 South African History Online

On 14 September 1886, the first large mining company on the Reef, the Witwatersrand Gold Mining Company, was formed with a total nominal capital of £3,063,000. The first crushing battery, consisting of five stamps, had been erected on the Reef in 1885 to service the Struben's excavations on the lower West Rand reef, but this was a small operation, and the first crushing machinery ordered ...

More

Gypsy Road Mine Shafts - Bulldog Reef Goldfields Guide

Sept 1871: A lease has been taken up on the Black Reef and Stewart's Reef, by a company to be styled the William the Conqueror Company, and mining operations are to be commenced forthwith. The reefs both yielded largely when originally worked, and the ground taken up includes that where the " Welcome Stranger " nugget was got, which was found close to the cap of the Black Reef.

More