Mining in the United Kingdom

The United Kingdom has a rich history of mining. Mining of non-ferrous minerals, particularly of copper and tin, has been ongoing since the Bronze Age.[3] For example, copper was mined in Wales during approximately 2200–850 BC.[4] Metalworking debris found beneath the ramparts at Beeston Castle in Cheshire is evidence of bronze production during the Bronze Age.[5]

Later, lead and copper attracted the Romans to Britain. The Romans introduced iron tools and used local slaves to mine galena, an important lead ore mineral, from which they refined lead, tin and silver. These metals were used locally and also transported by ship throughout the Roman Empire. Galena was mined from deep mines located in Scotland and Wales.

The widespread availability of coal and iron was a significant factor in Europe's Industrial Revolution of the late 18th and early 19th centuries. Although less coal and iron ore are mined in the United Kingdom today, they were once mined in large quantities and utilized for steel and energy production. With large quantities of important minerals available and easily accessible, the country's economy grew rapidly.

In the 20th century, the mineral industry decreased production of coal and metals due to foreign competition. However, the extraction of aggregates and crude oil has increased.

The data are from the British Geological Survey.[1][2]

The United Kingdom still has large reserves of available fossil fuels. Natural gas, oil, and coal are all produced in the United Kingdom. Coal is mined from many areas in the United Kingdom from both deep mines and surface mines. In addition to the coal being mined on land, large reserves of oil and natural gas are being tapped in the North Sea.

Metal production in the United Kingdom has decreased over the past century. Although the United Kingdom has a large variety of important metal ores, little metal is currently being mined due to the effects of globalization: it is cheaper to extract in other countries. For example, although large reserves of iron and copper ores exist in the United Kingdom, these ores are now largely imported – copper ore from Chile and North America, and iron ore from China, Brazil and Australia yield higher grades of metals at lower costs.[14]

The metalliferous sector of the mining industry was worth £5 million in 2012, making up a very small part of the sector.[1] It consists mainly of the Galantas Gold Corporation's gold mine in Cavanacaw, Northern Ireland. Currently an open pit mine, permission was granted for it to extend 400 metres underground.[15] Lead and silver are still being mined as a by-product of this mine.[1]

In 2014, the Australian company Wolf Minerals started to re-open Hemerdon Mine in Devon.[16] It is the fourth-largest reserve of tungsten in the world and also expects to produce 1,000 tonnes of tin annually.[17]

Distribution of Principal Industrial Mineral Workings

Many types of industrial minerals are found in the United Kingdom, especially England. However, the location of individual industrial minerals and their quality fundamentally reflects geology and many are highly restricted in their occurrence. This causes many to coincide with environmentally sensitive areas. Examples include fluorspar and potash, which are essentially confined to National Parks. Carboniferous limestones and the Cretaceous Chalk are the two main limestone resources which are used for cement and industry in England. These rocks also give rise to highly attractive scenery and consequently cause controversies when utilised.[18]

The most common minerals extracted are sand and gravel, used in construction and road building. 51% (167 million tonnes) of all the minerals produced in the United Kingdom in 2011 were aggregates.[19] With 80 quarries, Tarmac is the United Kingdom's largest producer of crushed rock, sand, and gravel.[20]

The industrial minerals sector in England generally consists of a small number of large businesses, with production of each mineral being dominated by few companies. Many firms form part of major international groups. However, there are also a number of smaller producers, chiefly industrial carbonates, silica sand and fluorspar, with a single site. The industrial minerals sector accounts for a relatively small proportion of Gross Value Added in the UK economy (an estimated £788 million). However, it is important to consider where the GVA is created: of the 69 main producing sites in the UK industrial minerals sector, 54 (78%) are located in either remote rural or accessible rural locations. Employment figures for the industrial mineral sector are under 15,000.

The markets for industrial minerals range from localised industries to international trade. Movement of the industrial minerals to market takes place by road, rail and sea, the latter to serve export markets, although some rock salt and agricultural dolomite is transported along its coast. Of the total marketable output of industrial minerals of 40 million tonnes (excl. aggregates) it is estimated that over 25% is transferred by rail or ship, a much higher proportion than for aggregates.

There are many slate mines in the United Kingdom producing slate for building and architectural purposes, of which the largest is the Delabole Slate Mine on the north coast of Cornwall.[21] The United Kingdom also has an abundance of specialized minerals such as china clay, used in fine china and porcelain; and Fuller's earth, an absorbent mineral used for spill containment and cleaning supplies.[22][23] However, production of Fuller's earth ceased in 2005 in the country.

The UK is a leading world producer and exporter of china clay and ball clay. Both minerals have a very limited occurrence and it is important that adequate reserves are maintained for long term use. The extraction of china clay results in a significant amount of waste — some 9 tonnes are produced for each tonne of clay.

In June 2015, the National Parks Authority voted in favour of allowing Sirius Minerals plc to construct the world's largest potash mine on the North York Moors.[24] It aims to create 1,000 jobs in an area which lost its previous mining industry. To avoid damaging the sensitive surroundings, the polyhalite is transported 36 km (22 mi) underground from the mine. However, ICL UK situated at Boulby Mine, which is currently the worlds only polyhalite producer, recorded its one million tonne target in 2018 and has plans to increase production to three million tonnes per annum by 2025.