In South Africa, dewatering of the dolomite compartments on the Far West Rand gold mining area started during the early 1960's and a number of catastrophic events lead to some of the more recent research by, for instance, Brink and Partridge, 1965, Donaldson, 1963, Kleywegt and Enslin, 1973 and Wolmerans (1984).
Highlights: . Characterization of sinkholes and subsidence environments in terms of depth to dolomite bedrock. Overview of generally successful rehabilitation techniques for the …
Limestone and dolomite are mined by opencast methods and sold either in bulk, powder or slurry form. Several companies reclaim residual limestone 'fines' from slime dams. …
J L van Rooy. Karst-related sinkholes and subsidences occur on areas underlain by Chuniespoort Group dolomite bedrock in the Gauteng Province, South Africa. Although dolomite land is found across ...
The Dolomite Market is expected to reach 183.98 million tons in 2024 and grow at a CAGR of 4.02% to reach 224.06 million tons by 2029. ... 5.3.5.2 South Africa. 5.3.5.3 Rest of Middle East and Africa. 6. COMPETITIVE LANDSCAPE ... Dolomite mining is a non-metallic mineral that can be used to produce ceramics, composites, glass, and refractory ...
The method of scenario supposition for stability evaluation of sites on dolomitic land in South Africa. Journal of the South Africa Institution of Civil Engineers, 37(4): 4-14. [ Links ] Buttrick, D B, Van Schalkwyk, A, …
Zimbiwa Dolomite, South Africa. 21st November 2003. Name: ... Brief history: Black economic empowerment mining company formed in 2001. ... Mining method: Opencast. Reserves: 5-million tons.
The global dolomite mining market is studied across different regions like North America, Europe, Asia Pacific, Latin America, and Middle East & Africa. North America accounted for the major share of the global market, as most of the dolomite mines are situated in the region, with a majority in the U.S.
This paper provides the first comprehensive mapping and classification of all 84 mining host communities (cities, towns and villages) in South Africa that are directly influenced by large-scale ...
The high-resolution seismic reflection method was conducted at an abandoned coal mine site located in the Benoni area, near the city of Johannesburg, South Africa, with the aim of investigating the subsidence- and sinkhole-related features that are commonly observed in the area. Like many old abandoned coal mine sites, the study …
On the Far West Rand of South Africa, sinkholes induced by the dewatering of dolomite groundwater compartments for gold mining caused the loss of life of 38 people (De Bruyn and Bell, 2001). A community of approximately 30 000 s was relocated to safer ground in a dolomite area west of Johannesburg, South Africa, at a cost …
ABSTRACT:. Around 20% of Gauteng Province and most of the gold mining districts of the Far West Rand are underlain by dolomitic formations. Ground surface instability may occur in such areas. Dewatering associated with mining in the gold bearing reefs of the Far West Rand, which underlie dolomite and unconsolidated deposits, has …
Dolomite. Chemical symbol: CaMg (CO3)2. Packaging: 25kg paper or propylene bags or 1 ton bulkbags. Our Dolomite is sourced from our own mines in Namibia and we produce and carry stock of many …
South Africa, sinkholes induced by the dewatering of dolomite groundwater compartments for gold mining caused the loss of life of 38 people (De Bruyn and Bell, 2001). A community of approximately 30 000 s was relocated to safer ground in a dolomite area west of Johannesburg, South Africa, at a cost
Several supergene ferromanganese wad deposits, mined on small scale for industrial applications, are developed on dolomite of the Neoarchaean Malmani Subgroup of the Transvaal Supergroup in South ...
Mining Methods and Techniques. 4.1. Surface Mining. Surface mining is the predominant method used to extract coal in South Africa. It involves removing the overlying soil and rock to access the coal seams. There are two main types of surface mining techniques employed: 4.1.1. Open-pit Mining.
Abstract. Damage to structures and loss of life have been more severe on dolomite than on any other geological formation in southern Africa. The subsidence that occurs on dolomitic terrain following development or during dewatering has given dolomite a notorious reputation and engineers and geologists became reluctant to recommend development ...
dolomite mines in south africa - How is dolomite mining harmful. West Wits Limpopo mined simultaneously. Current mining operations are on the OJ (depleted in 2018) injury or structural damage. Such features are known as sinkholes and in South Africa occur in areas underlain by dolomite rock. Approximately 25% of Gauteng Province, اقرأ أكثر
The dolomite aquifer is the largest water source in northern South Africa. The flow dynamics of the dolomite aquifer is investigated by using analyses of the hydro-chemical parameters and isotopes (3H, δ2H, δ18O, δ13C-DIC and 14C-DIC) of spring samples. Recharge areas of the dolomite aquifer are confirmed through interpretation of …
PDF | On Jan 1, 2001, D.B. Buttrick and others published Proposed method for dolomite land hazard and risk assessment in South Africa | Find, read and cite all the research you need on...
Dolomite from South Africa. Dolomite Pering Mine, Reivilo, Greater Taung Local Municipality, Dr Ruth Segomotsi Mompati District Municipality, North West, South Africa ... South Africa. Publications of the Australasian Institute of Mining and Metallurgy 8/2005 (Iron Ore Conference 2005), 57-65. ; Basson, I. J., & Koegelenberg, C. (2017 ...
Dolomitic aquifers are regarded as important groundwater storage sites in South Africa. Since these aquifers occur in a semi-arid climatic setting with low rainfall, often characterized by a torrential downpour and high potential evapotranspiration, the occurrence of active recharge is very limited (<5% of mean annual rainfall) as compared …
Since the late nineteenth century, the mining sector has played a vital role in the development of South Africa as it makes a key contribution to the country's economy, infrastructure, and employment [1,2].The industry employed nearly 500,000 of the national labour force and contributed R349 billion (8.8%) to the country's gross domestic product …
Locality. Type population collected from shaft 3, level 26, corridor 28 of Beatrix gold mine, South Africa, at a depth of 1.3 km, approximately 1 km north of shaft 3 (28° 14′ 24.06′′ S, 26 ...
Fourie highlighted that research by the Chamber of Mines had shown that, if there was no substantial change in the mining methods used in South Africa, gold and platinum mining could cease in 2033 ...
The liberalization of the diamond marketing system led to increased diamond prices and this, coupled with the devaluation of the Rand against the US$ during late 2001 and 2002, resulted in a significant increase in onshore alluvial diamond production in South Africa.
The focus shifted from opencast and shallow pit mining methods to underground mining as new techniques had to be developed to access the rich gold deposits that extended far underground. ... Brackley, I.J., Connelly, R.J., Campbell, G., 1987. The dewatering of dolomite by deep mining in the West Rand, South Africa. In: …
The dolomite rocks in South Africa coincide for the most part with the so-called Pretoria-Witwatersrand-Vereeniging complex which comprises the industrial heart of the country. ... differences of several hundred metres have been caused by the dewatering of the different compart- ments through deep mining activities. The dolomite aquifers …
The term 'dolomitic land' is used to describe areas in South Africa underlain directly or at shallow depth (i.e. <100m) by the rock type dolomite. Dolomitic rock is composed of the …
Received: 15 September 1996 7 Accepted: 12 May 1998 D. Buttrick Intraconsult CC, PO Box 2022, Rivonia 2128, Republic of South Africa A. van Schalkwyk (Y) Department of Geology, University of Pretoria, Pretoria 0002, Republic of South Africa. AbstractA method is proposed to assess the risk for sinkhole formation in dolomitic areas where changes ...
by T.A. Ngcobo* Paper written on project work carried out in partial fulfilment of BSc Eng (Mining) degree. J. o. u. a. l. p. e. r. n. Synopsis. The purpose of this report is to assess …
Oberholzer 2502, South Africa A. van Schalkwyk (Y) Department of Earth Sciences, University of Pretoria, Pretoria 0002, South Africa e-mail: avschalk6nsnper1.up.ac.za Tel.: c27-12-4202794 Fax: c27-12-3625200 Abstract Artificial lowering of the groundwater level in dolomitic aquifers of the Far West Rand gold mining area has led to the formation of
Dolomite Imports Imports into South Africa. In 2021, approx. X tons of dolomite were imported into South Africa; jumping by 212% against the previous year. In general, imports showed a significant increase. The most prominent rate of growth was recorded in 2016 when imports increased by 781% against the previous year.
INCA Mining. Mining and processing of limestone, dolomite and clay (attapulgite) in the Immerpan area, which is located 40km Southeast of Mokopane (approximately 230km North of Johannesburg) in the Limpopo Province of South Africa. INCA Mining supplies limestone into the following markets: Inca currently holds approved Mineral Leases …
It commences with a classification of a dolomite site in terms of overburden thickness followed by a discussion of the relevant construction methods The methods include mattresses of...
Dolomitic aquifers are regarded as important groundwater storage sites in South Africa. Since these aquifers occur in a semi-arid climatic setting with low rainfall, …
Dolomite rock formations underlie large areas of the Gauteng, North, North-West and Mpumalanga Provinces in South Africa. Sinkholes, subsidences and dolines that may form at any place and at any time on these formations pose a threat to the properties and lives of thousands of people who live and work there. Since much urban, industrial …
To assess the potential risk of Mining Influenced Water (MIW) contaminating the "Cradle of Humankind" Un World Heritage site ("Fossil Hominid Sites of South Africa"), flow measurements were conducted in the Tweelopiespruit, a stream influenced by treated mine water from abandoned gold mines in the Witwatersrand gold fields (South …
This phenomenon was first recognised in South Africa by Bredenkamp et al. (1991), applying different analytical methods to a similar dolomitic aquifer. Later the same distance-dependency of storativity values was found in numerous fractured and karst aquifers throughout South Africa (Kirchner and Van Tonder, 1995).
In the Far West Rand of South Africa, catastrophic sinkholes induced by dewatering of dolomite aquifers for gold mining have caused a total of 38 fatalities (Buttrick et al., 2001; De Bruyn and ...