Mining engineering

Short description: Engineering discipline

Surface gold mine with haul truck in foreground, in Kalgoorlie, Australia

Mining in the engineering discipline is the extraction of minerals from underneath, open pit, above, or on the ground. Mining engineering is associated with many other disciplines, such as mineral processing, exploration, excavation, geology, and metallurgy, geotechnical engineering and surveying. A mining engineer may manage any phase of mining operations, from exploration and discovery of the mineral resources, through feasibility study, mine design, development of plans, production and operations to mine closure.[citation needed]

With the process of mineral extraction, some amount of waste and uneconomic material are generated, which are the primary source of pollution in the vicinity of mines. Mining activities, by their nature, cause a disturbance of the natural environment in and around which the minerals are located. Mining engineers must therefore be concerned not only with the production and processing of mineral commodities but also with the mitigation of damage to the environment both during and after mining as a result of the change in the mining area. Such industries go through stringent laws to control the pollution and damage caused to the environment and are periodically governed by the concerned departments.

## Contents

* 1 History of mining engineering
* 2 Education
* 3 Salary and statistics
* 4 Pre-mining
* 4.1 Mineral discovery
* 4.2 Mineral determination
* 4.3 Feasibility study
* 5 Mining operation
* 5.1 Surface mining
* 5.2 Mining process
* 6 Mining health and safety
* 6.1 United States
* 7 Mining and the environment
* 7.1 United States
* 8 See also
* 9 Footnotes
* 10 Further reading
* 11 External links

## History of mining engineering

From prehistoric times to the present, mining has played a significant role in the existence of the human race. Since the beginning of civilization, people have used stone and ceramics and, later, metals found on or close to the Earth's surface. These were used to manufacture early tools and weapons. For example, high-quality flint found in northern France and southern England were used to set fire and break rock.[1] Flint mines have been found in chalk areas where seams of the stone were followed underground by shafts and galleries. The oldest known mine on archaeological record is the "Lion Cave" in Eswatini. At this site, which radiocarbon dating indicates to be about 43,000 years old, paleolithic humans mined mineral hematite, which contained iron and was ground to produce the red pigment ochre.[2][3]

The ancient Romans were innovators of mining engineering. They developed large-scale mining methods, such as the use of large volumes of water brought to the minehead by numerous aqueducts for hydraulic mining. The exposed rock was then attacked by fire-setting, where fires were used to heat the rock, which would be quenched with a stream of water. The thermal shock cracked the rock, enabling it to be removed. In some mines, the Romans utilized water-powered machinery such as reverse overshot water-wheels. These were used extensively in the copper mines at Rio Tinto in Spain, where one sequence comprised 16 such wheels arranged in pairs, lifting water about 80 feet (24 m).[4]

Black powder was first used in mining in Banská Štiavnica, Kingdom of Hungary (present-day Slovakia) in 1627.[5] This allowed blasting of rock and earth to loosen and reveal ore veins, which was much faster than fire-setting. The Industrial Revolution saw further advances in mining technologies, including improved explosives and steam-powered pumps, lifts, and drills as long as they remained safe.

## Education

Colorado School of Mines

There are many ways to become a Mining Engineer, but all include a university or college degree. Primarily, training includes a Bachelor of Engineering (B.Eng. or B.E.), Bachelor of Science (B.Sc. or B.S.), Bachelor of Technology (B.Tech.) or Bachelor of Applied Science (B.A.Sc.) in Mining Engineering. Depending on the country and jurisdiction, to be licensed as a mining engineer, a Master's degree; Master of Engineering (M.Eng.), Master of Science (M.Sc or M.S.) or Master of Applied Science (M.A.Sc.) may be required. There are also mining engineers who have come from other disciplines, e.g., from engineering fields like Mechanical Engineering, Civil Engineering, Electrical Engineering, Geomatics Engineering, Environmental Engineering or from science fields like Geology, Geophysics, Physics, Geomatics, Earth Science, Mathematics, However, this path requires taking a graduate degree such as M.Eng, M.S., M.Sc. or M.A.Sc. in Mining Engineering after graduating from a different quantitative undergraduate program to be qualified as a mining engineer.

The fundamental subjects of mining engineering study usually include:

* Mathematics; Calculus, Algebra, Differential Equations, Numerical Analysis
* Geoscience; Geochemistry, Geophysics, Mineralogy, Geomatics
* Mechanics; Rock mechanics, Soil Mechanics, Geomechanics
* Thermodynamics; Heat Transfer, Work (thermodynamics), Mass Transfer
* Hydrogeology
* Fluid Mechanics; Fluid statics, Fluid Dynamics
* Geostatistics; Spatial Analysis, Statistics
* Control Engineering; Control Theory, Instrumentation
* Surface Mining; Open-pit mining
* Underground mining (soft rock)
* Underground mining (hard rock)
* Computing; DATAMINE, MATLAB, Maptek (Vulcan), Golden Software (Surfer), MicroStation, Carlson
* Drilling and blasting
* Solid Mechanics; Fracture Mechanics

In the United States , about 14 universities offer a B.S. degree in mining and mineral engineering. The top rated universities include Michigan Technological University, South Dakota School of Mines and Technology, Virginia Tech, the University of Kentucky, the University of Arizona, Pennsylvania State University, and Colorado School of Mines. A complete list can be accessed from smenet.org. Most of these universities offer M.S. and Ph.D. degrees as well.

In Canada , there are 19 undergraduate degree programs in mining engineering or equivalent.[6] McGill University Faculty of Engineering offers both undergraduate (B.Sc., B.Eng.) and graduate (M.Sc., Ph.D.) degrees in Mining Engineering.[7][8] and the University of British Columbia in Vancouver offers a Bachelor of Applied Science (B.A.Sc.) in Mining Engineering[9] and also graduate degrees (M.A.Sc. or M.Eng and Ph.D.) in Mining Engineering.[10]

In Europe, most programs are integrated (B.S. plus M.S. into one) after the Bologna Process and take five years to complete. In Portugal, the University of Porto offers an M.Eng. in Mining and Geo-Environmental Engineering[11] and in Spain the Technical University of Madrid offers degrees in Mining Engineering with tracks in Mining Technology, Mining Operations, Fuels and Explosives, Metallurgy.[12] In the United Kingdom , The Camborne School of Mines offers a wide choice of BEng and MEng degrees in Mining engineering and other Mining related disciplines. This is done through the University of Exeter.[13] In Romania, the University of Petroșani (formerly known as the Petroşani Institute of Mines, or rarely as the Petroşani Institute of Coal) is the only university that offers a degree in Mining Engineering, Mining Surveying or Underground Mining Constructions, albeit, after the closure of Jiu Valley coal mines, those degrees had fallen out of interest for most high-school graduates.[14]

In South Africa , leading institutions include the University of Pretoria, offering a 4-year Bachelor of Engineering (B.Eng in Mining Engineering) as well as post-graduate studies in various specialty fields such as rock engineering and numerical modelling, explosives engineering, ventilation engineering, underground mining methods and mine design;[15] and the University of the Witwatersrand offering a 4-year Bachelor of Science in Engineering (B.Sc.(Eng.)) in Mining Engineering[16] as well as graduate programs (M.Sc.(Eng.) and Ph.D.) in Mining Engineering.[17]

Some mining engineers go on to pursue Doctorate degree programs such as Doctor of Philosophy (Ph.D., DPhil), Doctor of Engineering (D.Eng., Eng.D.). These programs involve a significant original research component and are usually seen as entry points into Academia.

In the Russia , 85 universities in all federal districts are training specialists for the mineral resource sector. Thirty-six universities in all federal districts are training specialists for extracting and processing solid minerals (mining). Forty-nine universities in all federal districts are training specialists for extracting, primary processing and transporting liquid and gaseous minerals (oil and gas). Thirty-seven universities in all federal districts are training specialists for geological exploration (applied geology, geological exploration). Among the universities that train specialists for the mineral resource sector, 7 are federal universities, and 13 are national research universities of Russia.[18] Personnel training for the mineral resource sector in Russian universities is currently carried out in the following main specializations of training (specialist's degree): "Applied Geology" with the qualification of mining engineer (5 years of training); "Geological Exploration" with the qualification of mining engineer (5 years of training); "Mining" with the qualification of mining engineer (5.5 years of training); "Physical Processes in Mining or Oil and Gas Production" with the qualification of mining engineer (5.5 years of training); "Oil and Gas Engineering and Technologies" with the qualification of mining engineer (5.5 years of training). Universities develop and implement the main professional educational programs of higher education in the directions and specializations of training by forming their profile (name of the program). For example, within the framework of the specialization "Mining", universities often adhere to the classical names of the programs "Open-pit mining", "Underground mining of mineral deposits", "Surveying", "Mineral enrichment", "Mining machines", "Technological safety and mine rescue", "Mine and underground construction", "Blasting work", "Electrification of the mining industry", etc. In the last ten years, under the influence of various factors, new names of programs have begun to appear, such as: "Mining and geological information systems", "Mining ecology", etc. Thus, universities, using their freedom to form new training programs for specialists, can look to the future and try to foresee new professions of mining engineers. After the specialist's degree, you can immediately enroll in postgraduate school (analog of Doctorate degree programs, four years of training).[18]

## Salary and statistics

Mining salaries are usually determined by the level of skill required, where the position is, and what kind of organization the engineer works for.[citation needed] When comparing salaries from one region to another, the cost of living and other factors must be considered.

Mining engineers in India earn relatively high salaries in comparison to many other professions,[19] with an average salary of $15,250. However, in comparison to mining engineer salaries in other regions, such as Canada, the United States, Australia, and the United Kingdom, Indian salaries are low. In the United States , there are an estimated 6,150 employed mining engineers, with a mean yearly wage of U.S. $103,710.[20]

## Pre-mining

The Prospector by N. C. Wyeth, 1906

Mineral exploration is the process of finding ores (commercially viable concentrations of minerals) to mine. Mineral exploration is much more intensive, organized, involved, and professional than mineral prospecting, though it frequently uses services exploration.

The first stage of mining consists of the processes of finding and exploring a mineral deposit. In the following first stage of mineral exploration, geologists and surveyors play a prominent role in the necessary pre-feasibility study of the possible mining operation. Mineral exploration and estimation of the reserve through various prospecting methods are carried out to determine the form and type of mining required in addition to the profitability conditions.[citation needed]

### Mineral discovery

Once a mineral discovery has been made and determined to be of sufficient economic quality to mine, mining engineers will then work on developing a plan to mine this effectively and efficiently.

The discovery can be made from the research of mineral maps, academic geological reports, or local, state, and national geological reports. Other sources of information include property essays and local word of mouth. Mineral research usually includes sampling and analyzing sediments, soil, and drill core. Soil sampling and analysis is one of the most popular mineral exploration tools.[21][22] Common tools include satellite and airborne photographs or airborne geophysics, including magnetometric and gamma-spectrometric maps.[23] Unless the mineral exploration is done on public property, the owners of the property may play a significant role in the exploration process. They might be the original discoverer of the mineral deposit.[24]

### Mineral determination

After a prospective mineral is located, the mining geologist and engineer determine the ore properties. This may involve chemical analysis of the ore to determine the sample's composition. Once the mineral properties are identified, the next step is determining the quantity of the ore. This involves determining the extent of the deposit and the purity of the ore.[25] The geologist drills additional core samples to find the limits of the deposit or seam and calculates the quantity of valuable material present in the warranty.

### Feasibility study

Main page: Engineering:Mining feasibility study

Once the mineral identification and reserve amount are reasonably determined, the next step is to determine the feasibility of recovering the mineral deposit. A preliminary survey shortly after the discovery of the deposit examines the market conditions, such as the supply and demand of the mineral, the amount of ore needed to be moved to recover a certain quantity of that mineral, and analysis of the cost associated with the operation. This pre-feasibility study determines whether the mining project is likely to be profitable; if so, a more in-depth analysis of the deposit is undertaken. After the full extent of the ore body is known and has been examined by engineers, the feasibility study examines the cost of initial capital investment, methods of extraction, the cost of operation, an estimated length of time to pay back, the gross revenue and net profit margin, any possible resale price of the land, the total life of the reserve, the full value of the account, investment in future projects, and the property owner or owners' contract. In addition, environmental impact, reclamation, possible legal ramifications, and all government permitting are considered.[26][27] These steps of analysis determine whether the mining company should proceed with the extraction of the minerals or whether the project should be abandoned. The mining company may decide to sell the rights to the reserve to a third party rather than develop it themselves. Alternatively, the decision to proceed with extraction may be postponed indefinitely until market conditions become favorable.

## Mining operation

Mining engineers working in an established mine may work as an engineer for operations improvement, further mineral exploration, and operation capitalization by determining where in the mine to add equipment and personnel. The engineer may also work in supervision and management or as an equipment and mineral salesperson. In addition to engineering and operations, the mining engineer may work as an environmental, health, and safety manager or design engineer.

The act of mining required different methods of extraction depending on the mineralogy, geology, and location of the resources. Characteristics such as mineral hardness, the mineral stratification, and access to that mineral will determine the method of extraction.

Generally, mining is either done from the surface or underground. Mining can also occur with surface and covert operations on the same reserve. Mining activity varies as to what method is employed to remove the mineral.

### Surface mining

Surface mining comprises 90% of the world's mineral tonnage output. Also called open pit mining, surface mining removes minerals in formations near the surface. Ore retrieval is done by material removal from the land in its natural state. Surface mining often alters the land's characteristics, shape, topography, and geological makeup.

Surface mining involves quarrying and excavating minerals through cutting, cleaving, and breaking machinery. Explosives are usually used to facilitate breakage. Hard rocks such as limestone, sand, gravel, and slate are generally quarried into benches.

Using mechanical shovels, track dozers, and front-end loaders, strip mining is done on softer minerals such as clays and phosphate removed. Smoother coal seams can also be extracted this way.

With placer mining, dredge mining can also remove minerals from the bottoms of lakes, rivers, streams, and even the ocean. In addition, in-situ mining can be done from the surface using dissolving agents on the ore body and retrieving the ore via pumping. The pumped material is then set to leach for further processing. Hydraulic mining is utilized as water jets to wash away either overburden or the ore itself.[28]

### Mining process

Blasting
Explosives are used to break up a rock formation and aid in the collection of ore in a process called blasting. Blasting generally the heat and immense pressure of the detonated explosives to shatter and fracture a rock mass. The type of explosives used in mining is high explosives, which vary in composition and performance properties. The mining engineer is responsible for selecting and properly placing these explosives to maximize efficiency and safety. Blasting occurs in many phases of the mining process, such as the development of infrastructure and the production of the ore. An alternative to high explosives are Cardox blasting cartridges, invented in 1931,[29] and extensively used from 1932 in coal mines. The cartridge contains an 'energizer' which heats liquid carbon dioxide until it ruptures a bursting disk; then, a physical explosion of the supercritical fluid.
Leaching
Leaching is the loss or extraction of certain materials from a carrier into a liquid (usually, but not always, a solvent). Mostly used in rare-earth metal extraction.
Flotation
Flotation (also spelled floatation) involves phenomena related to the relative buoyancy of minerals. It is the most widely used metal separating method.
Electrostatic separation
Separating minerals by electro-characteristic differences.
Gravity separation
Gravity separation is an industrial method of separating two components, either a suspension or dry granular mixture, where separating the components with gravity is sufficiently practical.
Magnetic separation
Magnetic separation is a process in which magnetically susceptible material is extracted from a mixture using a magnetic force.
Hydraulic separation
Hydraulic separation is a process that uses the density difference to separate minerals. Before hydraulic separation, minerals were crushed into uniform sizes; minerals with uniform sizes and densities will have different settling velocities in water, which can be used to separate target minerals.

## Mining health and safety

Main page: Organization:Mine Safety and Health Administration

Legal attention to Mining Health and Safety began in the late 19th century. In the subsequent 20th century, it progressed to a comprehensive and stringent codification of enforcement and mandatory health and safety regulation. In whatever role, a mining engineer must follow all federal, state, and local mine safety laws.

### United States

The United States Congress, through the passage of the Federal Mine Safety and Health Act of 1977, known as the Miner's Act, created the Mine Safety and Health Administration (MSHA) under the US Department of Labor.

This comprehensive Act provides miners with rights against retaliation for reporting violations, consolidated regulation of coal mines with metallic and nonmetallic mines, and created the independent Federal Mine Safety and Health Review Commission to review MSHA's reported violations.[30]

The Act codified in Code of Federal Regulations § 30 (CFR § 30) covers all miners at an active mine. When mining engineer works at an active mine, they are subject to the same rights, violations, mandatory health and safety regulations, and compulsory training as any other worker at the mine. The mining engineer can be legally identified as a "miner."[31]

The Act establishes the rights of miners. The miner may report at any time a hazardous condition and request an inspection. The miners may elect a miners' representative to participate during an inspection, pre-inspection meeting, and post-inspection conference. The miners and miners' representatives shall be paid for their time during all inspections and investigations.[32]

## Mining and the environment

### United States

Land reclamation is regulated for surface and underground mines according to the Surface Mining Control and Reclamation Act of 1977. The law creates as a part of the Department of Interior, the Bureau of Surface Mining (OSM). OSM states on its website, "OSM is charged with balancing the nation's need for continued domestic coal production with protection of the environment."

The law requires that states set up their own Reclamation Departments and legislate laws related to reclamation for coal mining operations. The states may impose additional regulations and regulate other minerals in addition to coal for land reclamation.[citation needed]

## See also

* School of mines
* Underground construction
* Automated mining
* Geological engineering

## Footnotes

1. ↑ Hartman, Howard L. SME Mining Engineering Handbook, Society for Mining, Metallurgy, and Exploration Inc, 1992, p. 3.[ISBN missing]
2. ↑ "Archaeology - Malolotja Nature Reserve – Ancient Mining". Culture – Archaeology. Eswatini National Trust Commission – Conserving Eswatini's Natural and Cultural Heritage. 2020. http://eswatininaturereserves.com/cultural/malolotja_archaeology.asp.
3. ↑ Peace Parks Foundation, "Major Features: Cultural Importance." Republic of South Africa: Author. Retrieved Aug. 27, 2007, [1].
4. ↑ The Romans in Britain: mining
5. ↑ Heiss, Andreas G.; Oeggl, Klaus (2008). "Analysis of the fuel wood used in Late Bronze Age and Early Iron Age copper mining sites of the Schwaz and Brixlegg area (Tyrol, Austria)". Vegetation History and Archaeobotany 17 (2): 211–221. doi:10.1007/s00334-007-0096-8. Bibcode: 2008VegHA..17..211H.
6. ↑ Undergraduate Mining courses in Canada. IDP Canada. https://www.idp.com/canada/search/mining/undergraduate Retrieved June 30, 2021. /
7. ↑ "Graduate Program". McGill University. https://www.mcgill.ca/mining/graduate-students/prospective/degree-programs/.
8. ↑ McGill University. Sunset of a Transformational Career. Chapter 16 in: White F. Miner with a Heart of Gold: a biography of a mineral science and engineering educator. Friesen Press, Victoria. 2020. ISBN 978-1-5255-7765-9 (Hardcover) ISBN 978-1-5255-7766-6 (Paperback) ISBN 978-1-5255-7767-3 (eBook)
9. ↑ "Mining Engineering at UBC". University of British Columbia. http://you.ubc.ca/ubc_programs/mining-engineering/.
10. ↑ "Graduate". University of British Columbia. http://mining.ubc.ca/graduate/.
11. ↑ "Master in Mining and Geo-Environmental Engineering". University of Porto. https://sigarra.up.pt/feup/en/cur_geral.cur_view?pv_ano_lectivo=2017&pv_origem=CUR&pv_tipo_cur_sigla=M&pv_curso_id=739/.
12. ↑ "Mining Engineering". Technical University of Madrid. http://www.upm.es/internacional/Students/StudiesDegrees/University Masters/Master programs?id=6.7&fmt=detail/.
13. ↑ "BEng Mining". http://www.exeter.ac.uk/undergraduate/courses/mining/.
14. ↑ "University of Petrosani, Romania" (in en). https://www.upet.ro/eng/.
15. ↑ "Mining Engineering | University of Pretoria". https://www.up.ac.za/mining-engineering.
16. ↑ "WITS Mining - Undergraduate Programme". University of the Witwatersrand. https://www.wits.ac.za/miningeng/undergraduates/.
17. ↑ "WITS Mining - Postgraduate Programme". University of the Witwatersrand. https://www.wits.ac.za/miningeng/postgraduates/.
18. ↑ 18.0 18.1 Petrov, V. L. (2022-11-05). "Analytical review of the training system for mining engineers in Russia". Gornye Nauki I Tekhnologii = Mining Science and Technology (Russia) 7 (3): 240–259. doi:10.17073/2500-0632-2022-3-240-259. ISSN 2500-0632. https://mst.misis.ru/jour/article/view/378.
19. ↑ "Geologist and Mining Engineer salaries in India". 2013-07-22. http://careerminer.infomine.com/geologist-and-mining-engineer-salaries-in-india/.
20. ↑ "Occupational Employment and Wages, May 2017 – 17-2151 Mining and Geological Engineers, Including Mining Safety Engineers". Occupational Employment. Bureau of Labor Statistics. May 20, 2018. http://www.bls.gov/oes/current/oes172151.htm.
21. ↑ Martins-Ferreira, M. A. C., Campos, J. E. G., & Pires, A. C. B. (2017). "Near-mine exploration via soil geochemistry multivariate analysis at the Almas gold province, Central Brazil: A study case." Journal of Geochemical Exploration, 173, 52–63.
22. ↑ Mann, A. W., Birrell, R. D., Fedikow, M. A. F., & De Souza, H. A. F. (2005). "Vertical ionic migration: mechanisms, soil anomalies, and sampling depth for mineral exploration". Geochemistry: Exploration, Environment, Analysis, 5(3), 201–210.
23. ↑ Pires, A. C. B., Carmelo, A. C., & Martins-Ferreira, M. A. C. (2019). "Statistical enhancement of airborne gamma-ray uranium anomalies: Minimizing the lithological background contribution in mineral exploration". Journal of Geochemical Exploration, 198, 100–113.
24. ↑ Peters, William C, SME: Mining Engineering Handbook, 2nd ed., Vol. 1, 1992, "Geologic Prospecting and Exploration," pp. 221–225, ISBN:0-87335-100-2
25. ↑ Gumble, Gordon E, et al. SME: Mining Engineering Handbook, 2nd ed., Vol. 1, C1992, "Sample Preparation and Assaying," pp. 327–332, ISBN:0-87335-100-2
26. ↑ Gentry Donald W., SME: Mining Engineering Handbook, 2nd ed., Volume 1, 1992, "Mine Evaluation and Investment Analysis", pp. 387–389, ISBN:0-87335-100-2
27. ↑ O'Hara, T. Alan and Stanley C. Suboleski, SME: Mining Engineering Handbook, 2nd ed., Vol. 1, 1992, "Costs and Cost Estimation", pp. 405–408, ISBN:0-87335-100-2
28. ↑ Ernest Bohnet, SME: Mining Engineering Handbook, 2nd ed., Volume 2, 1992, "Surface Mining: Comparison of Methods," pp. 1529–1538, ISBN:0-87335-100-2
29. ↑ & Cardox (Great Britain) Limited"Improvements in and relating to means for effecting discharge of explosive charges such as those of blasting cartridges" GB patent 386688, published 1933-01-13
30. ↑ "History of Mine Safety and Health Legislation". http://www.msha.gov/MSHAINFO/MSHAINF2.HTM.
31. ↑ 20 CFR § 46.2(g)(1)(i)(ii)
32. ↑ The Federal Mine Safety and Health Act of 1977, § 103(f) and (g)(1)

This article incorporates text by Petrov, V. L. available under the CC BY 4.0 license.

## Further reading

* Eric C. Nystrom, Seeing Underground: Maps, Models, and Mining Engineering in America. Reno, NV: University of Reno Press, 2014. [ISBN missing]
* Franklin White. Miner with a Heart of Gold: a biography of a mineral science and engineering educator. Friesen Press, Victoria. 2020. ISBN 978-1-5255-7765-9 (Hardcover) ISBN 978-1-5255-7766-6 (Paperback) ISBN 978-1-5255-7767-3 (eBook)

## External links

* SME (Society for Mining, Metallurgy, and Exploration), publishes the monthly magazine Mining Engineering
* U.S. Department of Labor: Mining and geological engineers
* British Geological Survey Mineral Processing
* Turkısh Mining Engineers
* Mineral Exploration Properties of Turkey
* DATAMINE (Datamine is a provider of the technology and the services required to plan and manage mining operations seamlessly.) Mining Software
* Mineral Exploration Mapping
* Mining Science and Technologies in Russia

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