Gritstone or grit is a hard, coarse-grained, siliceous sandstone. This term is especially applied to such sandstones that are quarried for building material. British gritstone was used for millstones to mill flour, to grind wood into pulp for paper and for grindstones to sharpen blades. "Grit" is often applied to sandstones composed of angular sand grains. It may commonly contain small pebbles.
A watermill or water mill is a mill that uses hydropower. It is a structure that uses a water wheel or water turbine to drive a mechanical process such as milling (grinding), rolling, or hammering. Such processes are needed in the production of many material goods, including flour, lumber, paper, textiles, and many metal products. These watermills may comprise gristmills, sawmills, paper mills, textile mills, hammermills, trip hammering mills, rolling mills, and wire drawing mills.
Millstones or mill stones are stones used in gristmills, used for triturating, crushing or, more specifically, grinding wheat or other grains. They are sometimes referred to as grindstones or grinding stones.
Quern-stones are stone tools for hand-grinding a wide variety of materials, especially for various types of grains. They are used in pairs. The lower stationary stone of early examples is called a saddle quern, while the upper mobile stone is called a muller, rubber, or handstone. The upper stone was moved in a back-and-forth motion across the saddle quern. Later querns are known as rotary querns. The central hole of a rotary quern is called the eye, and a dish in the upper surface is known as the hopper. A handle slot contained a handle which enabled the rotary quern to be rotated. They were first used in the Neolithic era to grind cereals into flour.
The Three Mills are former working mills and an island of the same name on the River Lea. It is one of London’s oldest surviving industrial centres. The mills lie in the London Borough of Newham, but despite lying on the Newham side of the Lea, access is principally from the western, London Borough of Tower Hamlets, side of the river.
A mill is a device, often a structure, machine or kitchen appliance, that breaks solid materials into smaller pieces by grinding, crushing, or cutting. Such comminution is an important unit operation in many processes. There are many different types of mills and many types of materials processed in them. Historically mills were powered by hand or by animals, working animal, wind (windmill) or water (watermill). In modern era, they are usually powered by electricity.
Millstone Grit is any of a number of coarse-grained sandstones of Carboniferous age which occur in the British Isles. The name derives from its use in earlier times as a source of millstones for use principally in watermills. Geologists refer to the whole suite of rocks that encompass the individual limestone beds and the intervening mudstones as the Millstone Grit Group. The term Millstone Grit Series was formerly used to refer to the rocks now included within the Millstone Grit Group together with the underlying Edale Shale Group.
Dalgarven Mill is near Kilwinning, in the Garnock Valley, North Ayrshire, Scotland and it is home to the Museum of Ayrshire Country Life and Costume. The watermill has been completely restored over a number of years and is run by the independent Dalgarven Mill Trust.
Green's Windmill is a restored and working 19th-century tower windmill in Sneinton, Nottingham. Built in the early 1800s for the milling of wheat into flour, it remained in use until the 1860s. It was renovated in the 1980s and is now part of a science centre, which together have become a local tourist attraction.
Ashton windmill is a tower mill in Chapel Allerton, Somerset, England. Its tower is over 7.5 metres (25 ft) high with stone walls that are 60 cm (2.0 ft) thick. The sails are 13 m (43 ft) across and used to be covered with canvas. The last millstones were 1.2 m (3.9 ft) across and the millstones used to grind wheat for flour and beans for cattle food.
Hazewind is a smock mill in Gieten, Drenthe, Netherlands. It was built in 1833 and has been restored to working order. The mill is listed as a Rijksmonument, number 16126.
Podlipoglav is a village in the City Municipality of Ljubljana in central Slovenia. The area is part of the traditional region of Lower Carniola and is now included with the rest of the municipality in the Central Slovenia Statistical Region.
Bark mills, also known as Catskill's mills, are water, steam, horse, ox or wind-powered edge mills used to process the bark, roots, and branches of various tree species into a fine powder known as tanbark, used for tanning leather. This powdering allowed the tannin to be extracted more efficiently from its woody source material. A barker would strip the bark from trees so that it might be ground in such mills, and the dried bark was often stored in bark houses.
An oil mill is a grinding mill designed to crush or bruise oil-bearing seeds, such as linseed or peanuts, or other oil-rich vegetable material, such as olives or the fruit of the oil palm, which can then be pressed to extract vegetable oils, which may be used as foods or for cooking, as oleochemical feedstocks, as lubricants, or as biofuels. The pomace or press cake – the remaining solid material from which the oil has been extracted – may also be used as a food or fertilizer.
A gristmill grinds cereal grain into flour and middlings. The term can refer to either the grinding mechanism or the building that holds it. Grist is grain that has been separated from its chaff in preparation for grinding.
De Hoop ("Hope") is a flour windmill in Ouddorp built in 1845 and fully renovated in 1984. It is one of the few windmills in the Netherlands that is still privately owned, and is still in full commercial operation.
De Akkermolen is a 17th-century windmill in Zundert, Netherlands. Built around 1605 to replace an earlier windmill, it was used as a gristmill until it was severely damaged in 1950. The mill was bought by the local government and restored in 1961, and it was listed as a national heritage site in 1974.
The Watermill at Opwetten is a watermill along the river Kleine Dommel, located on the Opwettenseweg 203 in Opwetten, Nuenen, Gerwen en Nederwetten, in the province of North Brabant, Netherlands. First mentioned in the 11th century, the watermill burned down and was rebuilt in 1764.
The Munnekezijlstermolen is a smock mill in Munnekezijl, Friesland, Netherlands which was built in 1856 and is in working order. The mill is listed as a Rijksmonument.
The Dutch Kills Millstones are a set of millstones in Queens, New York City.
