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What is mining?

Much of the credit for this presentation goes to Manassés Soares, an ex-student at UFMG's School of Engineering, whose initiative has inspired me to find a way to explain such a complex topic as mining.
by

Allefi Castro

on 28 November 2013

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Transcript of What is mining?

What is Mining
Federal University of Minas Gerais
School of Engineering - Department of Mining Engineering
Allefi Castro Silva
Student
Belo Horizonte City, Minas Gerais State, Brazil
Mining
Mining is the activity, occupation, and industry concerned with the extraction of any naturally occuring mineral substances - solid, liquid, and gas - from the earth or other heavently bodies for utilitarian purposes.
Environmental Responsibilities
Health Performance
Mining-related health effects' legislation
Pneumoconiosis (black lung): silica and coal dust, and asbestos
Efforts to reduce exposure of mine workers to these substances and particulate matter (cancer)
Economics
Asteroid mining
From the prehistoric times to the present
minimum water and chemical pollution
landscape's revegetation
proper disposal of waste materials
minimum impact on the topography
minimum damage to the flora and fauna
sustainable development
Silent Spring
, by Rachel Carson
Ocuppational Safety and Healthy Adminnistration -- OSHA
<https://www.osha.gov/>
Is the possibility of exploiting raw materials from asteroids and other minor planets, including near-Earth objects.
João Martins da Silva
Professor
Study aerial and satellite photographs
Study available geological maps and surface maps
Prepare photogeological maps from available information and new aerial data
Conduct preliminary ground geological, geophysical, and/or geochemical surveys
Assemble and analyze findings
Prospecting
Conclusive evidence of the existence of an ore body requires that samples representative of the whole deposit be collected and analyzed.
Samples are normally obtained by excavation or drilling
Reserve Estimates
Define and evaluate the anomalies due to mineral deposits
Exploration
Land Acquisition
Mining Exploitation Methods
Surface Mining or Underground Mining
The mining method selected is determined by characteristics of the mineral deposit and the limitations due to safety implications, economics and environmental concerns.
Ore / Waste (gangue)
Unit Operations
Rock Breakage
Drilling
Excavation
Detonation
Transportation
Development and
Exploitation
Access roads
Power sources
Mineral transportation systems
Waste disposal areas
Offices
Crystals of cassiterite, a commercially valuable mineral, in a matrix of quartz, the gangue

After the mine closure: restoration of the land surface, the water quality, and the waste disposal areas.
Restoration of native plants
Subsequent Use of the Land
Shopping malls
Golf courses
Airports
Lakes
Solid waste disposal areas
Reclamation
Nova Lima, Minas Gerais, Brazil
Crushing - Grinding
Sizing
Separation of particles according to their size.
Concentration
Gravity concentration
Froth flotation
Electrostatic separation
Drying treatment
Ore Dressing
Crushing and Grinding also called comminution is the process of reducing the size of the particles of the materials that were put in.
Results of Mining
Civil construction comes from mining
Sand etc.
Food: fertilizers
Water
Mineral Water
Medicine
Zinc
Sand
Phosphate
Lead
Copper
Energy
Coal
Uranium
Nuclear Energy
Electronics
Silicon
Government Regulations applied to Mining
The laws and regulations that apply to the mining industry are many and variety according to each country.
Mining Law of 1872
Mineral Leasing Act of 1920
Federal Coal Mine Health and Safety Act of 1969
Federal Mine Safety and Health Amendments Act of 1977
Surface Mining Control and Reclamation Act

LET'S TAKE A LOOK AT THE STAGES OF A MINE LIFE
WHAT ABOUT
ENGINEERING?
YOU MIGHT BE WONDERING...
Mining Engineering
The practice of applying engineering principles to the development, planning, operation, closure, and reclamation of mines.
Bibliography
INTRODUCTORY MINING ENGINEERING; MUTMANSKY, Jan M.; HARTMAN, Howart L.; 2nd edition; New Jersey, USA, 2002.
United States Department of Labor: <https://www.osha.gov/>
Much of the credit for this presentation goes to Manassés Soares, an ex-student at UFMG's School of Engineering, whose initiative has inspired me to find a way to explain such a complex topic as mining.

I especially dedicate this presentation to my classmates for being such an intelligent class.
Full transcript