Sand mining is the extraction of
sand
Sand is a granular material composed of finely divided mineral particles. Sand has various compositions but is defined by its grain size. Sand grains are smaller than gravel and coarser than silt. Sand can also refer to a soil texture, textur ...
, mainly through an
open pit (or sand pit) but sometimes
mined
Mined may refer to:
* Mined (text editor), a terminal-based text editor
* Mining, the extraction of valuable geological materials from the Earth
See also
* Mind (disambiguation)
* Mine (disambiguation)
Mine, mines, miners or mining may refer ...
from
beach
A beach is a landform alongside a body of water which consists of loose particles. The particles composing a beach are typically made from rock, such as sand, gravel, shingle, pebbles, etc., or biological sources, such as mollusc shell ...
es and inland
dune
A dune is a landform composed of wind- or water-driven sand. It typically takes the form of a mound, ridge, or hill. An area with dunes is called a dune system or a dune complex. A large dune complex is called a dune field, while broad, fl ...
s or
dredged from ocean and
river beds. Sand is often used in manufacturing, for example as an
abrasive
An abrasive is a material, often a mineral, that is used to shape or finish a workpiece through rubbing which leads to part of the workpiece being worn away by friction. While finishing a material often means polishing it to gain a smooth, reflec ...
or in
concrete
Concrete is a composite material composed of fine and coarse aggregate bonded together with a fluid cement (cement paste) that hardens (cures) over time. Concrete is the second-most-used substance in the world after water, and is the most ...
. It is also used on
icy and
snow
Snow comprises individual ice crystals that grow while suspended in the atmosphere
An atmosphere () is a layer of gas or layers of gases that envelop a planet, and is held in place by the gravity of the planetary body. A planet ...
y roads usually mixed with
salt
Salt is a mineral composed primarily of sodium chloride (NaCl), a chemical compound belonging to the larger class of salts; salt in the form of a natural crystalline mineral is known as rock salt or halite. Salt is present in vast quanti ...
, to lower the
melting point
The melting point (or, rarely, liquefaction point) of a substance is the temperature at which it changes state from solid to liquid. At the melting point the solid and liquid phase exist in equilibrium. The melting point of a substance depends ...
temperature, on the
road surface. Sand can replace eroded coastline. Some uses require higher purity than others; for example sand used in concrete must be free of
seashell
A seashell or sea shell, also known simply as a shell, is a hard, protective outer layer usually created by an animal or organism that lives in the sea. The shell is part of the body of the animal. Empty seashells are often found washe ...
fragments.
Sand mining presents opportunities to extract
rutile
Rutile is an oxide mineral composed of titanium dioxide (TiO2), the most common natural form of TiO2. Rarer polymorphs of TiO2 are known, including anatase, akaogiite, and brookite.
Rutile has one of the highest refractive indices at visible wa ...
,
ilmenite
Ilmenite is a titanium-iron oxide mineral with the idealized formula . It is a weakly magnetic black or steel-gray solid. Ilmenite is the most important ore of titanium and the main source of titanium dioxide, which is used in paints, printing ...
, and
zircon
Zircon () is a mineral belonging to the group of nesosilicates and is a source of the metal zirconium. Its chemical name is zirconium(IV) silicate, and its corresponding chemical formula is Zr SiO4. An empirical formula showing some of th ...
, which contain the industrially useful elements
titanium
Titanium is a chemical element with the Symbol (chemistry), symbol Ti and atomic number 22. Found in nature only as an oxide, it can be reduced to produce a lustrous transition metal with a silver color, low density, and high strength, resista ...
and
zirconium. Besides these minerals, beach sand may also contain
garnet
Garnets () are a group of silicate minerals that have been used since the Bronze Age as gemstones and abrasives.
All species of garnets possess similar physical properties and crystal forms, but differ in chemical composition. The different ...
,
leucoxene,
sillimanite, and
monazite.
These
mineral
In geology and mineralogy, a mineral or mineral species is, broadly speaking, a solid chemical compound with a fairly well-defined chemical composition and a specific crystal structure that occurs naturally in pure form.John P. Rafferty, ed. ...
s are often found in ordinary sand deposits. A process known as
elutriation is used, whereby flowing water separates the grains based on their size, shape, and density.
Sand mining is a direct cause of
erosion
Erosion is the action of surface processes (such as water flow or wind) that removes soil, rock, or dissolved material from one location on the Earth's crust, and then transports it to another location where it is deposited. Erosion is di ...
, and impacts the local
wildlife. Various animals depend on sandy beaches for nesting
clutches, and mining has led to the near extinction of
gharial
The gharial (''Gavialis gangeticus''), also known as gavial or fish-eating crocodile, is a crocodilian in the family Gavialidae and among the longest of all living crocodilians. Mature females are long, and males . Adult males have a distinct ...
s (a species of
crocodile
Crocodiles (family Crocodylidae) or true crocodiles are large semiaquatic reptiles that live throughout the tropics in Africa, Asia, the Americas and Australia. The term crocodile is sometimes used even more loosely to include all extant ...
) in
India
India, officially the Republic of India ( Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the ...
. Disturbance of underwater and coastal sand causes
turbidity
Turbidity is the cloudiness or haziness of a fluid caused by large numbers of individual particles that are generally invisible to the naked eye, similar to smoke in air. The measurement of turbidity is a key test of water quality.
Fluids ...
in the water, which is harmful for organisms like
coral
Corals are marine invertebrates within the class Anthozoa of the phylum Cnidaria. They typically form compact colonies of many identical individual polyps. Coral species include the important reef builders that inhabit tropical oceans and secre ...
that need
sunlight. It can also destroy
fisheries, financially harming their operators.
Removal of physical coastal barriers, such as dunes, sometimes leads to flooding of beachside communities, and the destruction of picturesque beaches causes
tourism
Tourism is travel for pleasure or business; also the theory and practice of touring, the business of attracting, accommodating, and entertaining tourists, and the business of operating tours. The World Tourism Organization defines tourism ...
to dissipate. Sand mining is regulated by law in many places, but is often done illegally. Globally, it is a $70 billion industry, with sand selling at up to $90 per cubic yard.
Illegal mining
By country
Australia
In the 1940 mining operations began on the
Kurnell Peninsula (
Captain Cook's landing place in
Australia) to supply the expanding Sydney building market. It continued until 1990 with an estimate of over 70 million tonnes of sand having been removed. The sand has been valued for many decades by the building industry, mainly because of its high crushed shell content and lack of organic matter, it has provided a cheap source of sand for most of Sydney since sand mining operations began. The site has now been reduced to a few remnant dunes and deep water-filled pits which are now being filled with
demolition waste from Sydney's building sites. Removal of the sand has significantly weakened the peninsula's capacity to resist storms. Ocean waves pounding against the reduced Kurnell dune system have threatened to break through to
Botany Bay, especially during the storms of May and June back in 1974 and of August 1998.
Sand Mining also takes place in the Stockton sand dunes north of Newcastle and in the Broken Hill region in the far west of the state.
A large and long-running sand mine in
Queensland
)
, nickname = Sunshine State
, image_map = Queensland in Australia.svg
, map_caption = Location of Queensland in Australia
, subdivision_type = Country
, subdivision_name = Australia
, established_title = Before federation
, established_ ...
,
Australia (on
North Stradbroke Island
North Stradbroke Island ( Jandai: ''Minjerribah''), colloquially ''Straddie'' or ''North Straddie'', is an island that lies within Moreton Bay in the Australian state of Queensland, southeast of the centre of Brisbane. Originally there was o ...
) provides a case study in the (disastrous) environmental consequences on a fragile sandy-soil based ecosystem, justified by the provision of low wage casual labor on an island with few other work options. The Labor state government pledged to end sand mining by 2025, but this decision was overturned by the LNP government which succeeded it. This decision has been subject to an allegation of corrupt conduct.
Sand mining contributes to the construction of buildings and development. The negative effects of sand mining include the permanent loss of sand in areas, as well as major habitat destruction.
India
Sand mining is a practice that is becoming an environmental issue in India. Environmentalists have raised public awareness of
illegal sand mining in the states of
Maharashtra,
Madhya Pradesh
Madhya Pradesh (, ; meaning 'central province') is a state in central India. Its capital city, capital is Bhopal, and the largest city is Indore, with Jabalpur, Ujjain, Gwalior, Sagar, Madhya Pradesh, Sagar, and Rewa, India, Rewa being the othe ...
, Andra Pradesh, Tamil Nadu and
Goa of
India
India, officially the Republic of India ( Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the ...
.
Conservation and environmental NGO
Awaaz Foundation
Awaaz Foundation (meaning "the organisation against sound" – "Awaaz" means "sound" in Urdu) is a charitable trust and non-governmental organisation in Mumbai, India which builds awareness, carries out advocacy, and is involved in educational ...
filed a
public interest litigation in the
Bombay High Court seeking a ban on mining activities along the Konkan coast.
Awaaz Foundation, in partnership with the Bombay Natural History Society also presented the issue of sand mining as a major international threat to coastal biodiversity at the Conference of Parties 11,
Convention on Biological Diversity, Hyderabad in October 2012.
D. K. Ravi
Doddakoppalu Kariyappa Ravi (10 June 1979 – 16 March 2015) was an Indian Administrative Service officer of Karnataka cadre, from the 2008 batch. He first came into limelight as a deputy commissioner of the Kolar district, after launching an o ...
, an
Indian Administrative Service officer of the
Karnataka
Karnataka (; ISO: , , also known as Karunāḍu) is a state in the southwestern region of India. It was formed on 1 November 1956, with the passage of the States Reorganisation Act. Originally known as Mysore State , it was renamed ''Kar ...
state, who was well known for his tough crackdown on the rampant illegal sand mining in the
Kolar district
Kolar district ) is a district in the state of Karnataka, India.
Kolar ( ಕೋಲಾರ) is the district headquarters. Located in southern Karnataka, it is the state's easternmost district. The district is surrounded by the Bangalore Rural ...
, was found dead at his residence in
Bengaluru
Bangalore (), officially Bengaluru (), is the capital and largest city of the Indian state of Karnataka. It has a population of more than and a metropolitan population of around , making it the third most populous city and fifth most ...
, on March 16, 2015. It is widely alleged that the death is not due to suicide but the handiwork of the mafia involved in
land grabbing and sand mining.
Sierra Leone
Recently, activists and local villagers have protested against sand mining on Sierra Leone's Western Area Peninsular. The activity is contributing to Sierra Leone's
coastal erosion
Coastal erosion is the loss or displacement of land, or the long-term removal of sediment and rocks along the coastline due to the action of waves, currents, tides, wind-driven water, waterborne ice, or other impacts of storms. The landwa ...
, which is proceeding at up to 6 meters a year.
United States
The current size of the sand mining market in the United States is slightly over a billion dollars per year. The industry has been growing by nearly 10% annually since 2005 because of its use in hydrocarbon extraction. The majority of the market size for mining is held by Texas and Illinois.
Wisconsin, Minnesota, Illinois, Indiana, Iowa and Florida
Silica sand mining business has more than doubled since 2009 because of the need for this particular type of sand, which is used in a process known as
hydraulic fracturing. Wisconsin is one of the five states that produce nearly 2/3 of the nation's silica. As of 2009, Wisconsin, along with other northern states, is facing an industrial mining boom, being dubbed the "sand rush" because of the new demand from large oil companies for silica sand. According to Minnesota Public Radio, "One of the industry's major players, U.S. Silica, says its sand sales tied to hydraulic fracturing nearly doubled to $70 million from 2009 to 2010 and brought in nearly $70 million in ''just the first nine months'' of 2011." According to the
Wisconsin Department of Natural Resources (WDNR), there are currently 34 active mines and 25 mines in development in Wisconsin. In 2012, the WDNR released a final report on the silica sand mining in Wisconsin titled ''Silica Sand Mining in Wisconsin''. The recent boom in silica sand mining has caused concern from residents in Wisconsin that include quality of life issues and the threat of
silicosis. According to the WDNR (2012) these issues include noise, lights, hours of operation, damage and excessive wear to roads from trucking traffic, public safety concerns from the volume of truck traffic, possible damage and annoyance resulting from blasting, and concerns regarding aesthetics and land use changes.
As of 2013, industrial frac sand mining has become a cause for activism, especially in the
Driftless Area of southeast Minnesota, northeast Iowa and southwest Wisconsin.
China
Much sand is extracted by dredges from the bottom of rivers such as the
Red River in
Yunnan
Yunnan , () is a landlocked province in the southwest of the People's Republic of China. The province spans approximately and has a population of 48.3 million (as of 2018). The capital of the province is Kunming. The province borders the ...
, or quarried in dry river beds. Due to the large demand for sand for construction, illicit sand mining is not uncommon.
In 2020 the
Coast Guard Administration of the neighboring country of
Taiwan
Taiwan, officially the Republic of China (ROC), is a country in East Asia, at the junction of the East and South China Seas in the northwestern Pacific Ocean, with the People's Republic of China (PRC) to the northwest, Japan to the northe ...
expelled or detained nearly 4,000 Chinese sand dredging vessels. Illegal sand dredging by Chinese vessels causes environmental damage in Taiwan as well as the
Philippines
The Philippines (; fil, Pilipinas, links=no), officially the Republic of the Philippines ( fil, Republika ng Pilipinas, links=no),
* bik, Republika kan Filipinas
* ceb, Republika sa Pilipinas
* cbk, República de Filipinas
* hil, Republ ...
.
See also
*
Beach theft
*
Environmental issues with mining
*
Heavy mineral sands ore deposits
*
Resource depletion
Resource depletion is the consumption of a resource faster than it can be replenished. Natural resources are commonly divided between renewable resources and non-renewable resources (see also mineral resource classification). Use of either ...
*
Sand mining in Kerala
Sand mining is a serious issue of environmental concern in the Kerala province of India. Even though sand mining is banned in most parts of Kerala, it is going on secretly because of the big demand of sand in the booming construction of the sta ...
*
Sand mining in Tamil Nadu
References
External links
Kiwis Against Seabed MiningExposes Cops-sand mafia nexus in India*
{{Natural resources
*
Environmental impact of mining
Surface mining
Mining
Mining is the extraction of valuable minerals or other geological materials from the Earth, usually from an ore body, lode, vein, seam, reef, or placer deposit. The exploitation of these deposits for raw material is based on the economic ...