All these dolmens are made from heavy granite slabs, mined using primitive technology.

Minerals currently being mined include marble, bentonite, coal, gold, bauxite, granite, titanium and gemstones.

Limestone is no longer mined, but a limited amount of granite continues to be quarried by a handful of employees.

The granite quarry is the largest open-face granite quarry in the world, and has been mined continuously since 1889 by the North Carolina Granite Corporation.

For centuries North West Leicestershire has been quarried and mined for coal, limestone, granite and brick clay, and its environmental damage was one of the reasons that it was chosen as the site for the National Forest, which is part of a Government-funded programme to create more woodland.

Jasper was mined at Carreg ; granite was quarried at Porth y Pistyll ; and there was a brickworks at Porth Neigwl.

Three granite deposits ( whose resources are 10 million cu. m ) have been explored and are being mined, an experimental mining is carried out in eight developed deposits.

The once very extensive alluvial deposits of tin ore, that were the first deposits to be mined, also point to the vast quantity of ore that once existed in lodes that have been eroded from above the granite since it was emplaced in the Carboniferous period.

Some of the minerals mined within the district are barite, dolomite, granite, gypsum, limestone, magnesite, marble, phosphate, red ochre and red oxide.

Coal and a black granite are mined around Belfast.

Its resources include granite and limestone, mined in Galșa.

The Romans followed this tradition and had many quarries especially in the northern part of the Eastern Desert of Egypt where porphyry and granite were mined and shaped for shipment.

In places this is deeply weathered and in the past the rotted granite was mined for pockets of the mineral kaolinite, which is used to make ceramic goods such as hand basins and bath tubs.

The Granite Railway, America's first railroad, was built to haul granite from the quarries in Quincy, Massachusetts, to the Neponset River in the 1820s.

There are also quarries of black marble, limestone flags, clay schist, and granite.

One of the granite quarries near Haytor

There were three major granite quarries on the moor: Haytor, Foggintor and Merrivale.

The granite quarries around Haytor were the source of the stone used in several famous structures, including the New London Bridge, completed in 1831.

The extensive quarries at Foggintor provided granite for the construction of London's Nelson's Column in the early 1840s, and New Scotland Yard was faced with granite from the quarry at Merrivale.

The unusual pink granite at Great Trowlesworthy Tor was also quarried, and there were many other small granite quarries dotted around the moor.

Gunpowder was needed for the tin mines and granite quarries then in operation on the moor.

The state's nickname, " The Granite State ", refers to its extensive granite formations and quarries.

With the closing of the prison in 1816, the town almost collapsed, but the completion of the Dartmoor Railway in 1823 brought back many people to the granite quarries.

In the 19th century, industry arrived in Herm with the establishment of granite quarries to serve the large scale military fortifications undertaken in the islands.

The abundance of granite found in many of Mine Hill's quarries provided the building material for the ore roaster and blast furnace, as well as for such world wonders as the Brooklyn Bridge and Grand Central Terminal in New York City.

The Stony Creek granite quarries also rose to prominence as a direct consequence of railroad construction.

On February 18, 1897, Green's Landing was set off and incorporated by the Maine State Legislature as Stonington, named for its granite quarries.

The village of South Thomaston grew around the mills, which would include three granite polishing machines to process stone cut from the town's numerous quarries.

These granite quarries continued in service well into the 20th century.

Several granite quarries operated during this time, the largest of which was the Beattie Granite Quarry, near what is now North Quarry Street, near the corner of Locust.

After Tyngsborough was incorporated it became known for its ferries which travelled up and down the Merrimack River, the quarries that produced granite, and several box companies that started in town.

* West Quincy is a residential and commercial section with immediate access to Interstate 93 and the site of several former granite quarries, now the Quincy Quarries Reservation, and the Granite Railway, first commercial railway in the United States.

The community claims one of the oldest granite quarries in New Hampshire.

Roxbury's granite quarries, among the most extensive in the Granite State at the time, provided some of the stone for the capitol building of New York in Albany.

Cold Spring is the home of the Cold Spring Granite Company, which operates five manufacturing locations and more than 30 granite quarries worldwide.

But the town's dominant industry was six granite quarries at Blue Mountain.

On March 30, 2010, a spokesman for the Egyptian Culture Ministry claimed it had unearthed a large red granite door in Luxor with inscriptions by User, a powerful adviser to the 18th dynasty Queen Hatshepsut who ruled between 1479 BC and 1458 BC, the longest of any woman.

In 1902 William Crossing wrote that he had been told by an old moorman that some of the granite blocks from the tomb's pedestal had also been used to make a clapper bridge across a stream flowing into the River Swincombe near the farm.

A solid base is a must for any successful course, and where early courses had plain dirt pads, modern courses use concrete, or more cost effective materials such as mulch, decomposed granite, or other natural materials.

" The mostly ruined Black Pyramid dating from the reign of Amenemhat III once had a polished granite pyramidion or capstone, now on display in the main hall of the Egyptian Museum in Cairo ( see Dahshur ).

At Glen Tilt in the Cairngorm mountains in the Scottish Highlands in 1785, Hutton found granite penetrating metamorphic schists, in a way which indicated that the granite had been molten at the time.

Following criticism, especially the arguments from Richard Kirwan who thought Hutton's ideas were atheistic and not logical, Hutton published a two volume version of his theory in 1795, consisting of the 1788 version of his theory ( with slight additions ) along with a lot of material drawn from shorter papers Hutton already had to hand on various subjects such as the origin of granite.

Heaviside also reportedly started painting his fingernails pink and had granite blocks moved into his house for furniture.

At Glen Tilt in the Cairngorm mountains he found granite penetrating metamorphic schists, in a way which indicated to him that the presumed primordial rock had been molten after the strata had formed.

The lightly dressed Andropov had become tired, and had taken a rest on a granite bench in the shade ; his body became thoroughly chilled, and he soon began shivering uncontrollably.

Jane Elizabeth Lathrop Stanford, wife of Leland Stanford, governor and U. S. Senator from California, though she was not a Roman Catholic herself, had a granite monument erected to honor Father Serra at Monterey.

Ryegate had granite on the south and west sides of Blue Mountain.

It was widened by 13 feet, using granite corbels ; but subsequent surveys showed that the bridge was sinking an inch ( about 2. 5 cm ) every eight years ; and by 1924, the east side had sunk some three to four inches ( about 9 cm ) lower than the west side.

Once the assembly had shouted their approval, Canute stood up and spoke to those assembled, both peasant and nobles: " You called my brother Harald the Whet-stone, but you will learn that I will be hard as granite!

By this time Looe had become a major port, one of Cornwall's largest, exporting local tin, arsenic and granite, as well as hosting thriving fishing and boatbuilding industries.

Pierce appointed Beauregard as superintending engineer of the New Orleans Federal customs house, a huge granite building that had been built in 1848.

The general area had been the site for granite quarrying even before the bridge was constructed as there was use of this specific granite in buildings constructed prior to the Revolutionary War.

Monson also had a large granite quarry that was opened by Rufus Flynt, later owned by his oldest son William Flynt.

World's largest open faced granite quarry, near Mount Airy. There were 3, 667 households out of which 24. 3 % had children under the age of 18 living with them, 40. 6 % were married couples living together, 14. 0 % had a female householder with no husband present, and 41. 9 % were non-families.

However, after several thousands of tons of granite had been dug out, a new 210-metre cutting was opened by Colin Gilbert, thus ending the squealing noise the trains had made negotiating this part of the line until that year.