Essay on enviroment pollution

essay on enviroment pollution

Essay on, environmental, pollution : causes, Effects and

There are about 600 outside doors to the city, hidden in the courtyards of surface dwellings. There is some speculation that Derinkuyu may be linked to another underground city, kaymakl, which is 9 kilometers away. M "An ancient tin mine was discovered in the taurus at a site named Göltepe, which was a large village from around. Cassiterite ore was then crushed at the surface, washed, and smelted with charcoal in rather small crucibles rather than the large furnaces characteristic of copper smelting sites. Goltepe has yielded many crucibles in which the tin was smelted into a slag that contained globules of pure tin, which had to be separated out by crushing and re-washing. The small scale of the crucible operations, and the crushing of the slag for multi-stage refining, make it difficult to detect the scale of the operations.

Essay on, pollution for Children and Students

There are help over 3-1/2 miles of tunnels on the Great Orme headland, created as Bronze age man worked the veins of Malachite. The Great Orme mines are possibly the most important copper mines of the Bronze age yet discovered and excavated. Apparently abandoned around 600 bc, but with some evidence of Roman patronage, the mines were reopened in 1692 and continued to be worked until the end of the 19th century. It is possible that some of the copper from the mine was exported to continental Europe, even in the Bronze age. In addition to the three main mining areas, there are many open-cast bell pit mines along the lines of the main geological faults." Great Orme copper Mines of Wales Image courtesy of m/attraction/185/ The Great Orme Ancient Copper Mines on the Creuddyn Peninsula dates back. M The ancient slag heaps of Cyprus contain the story of the island as a regional source of copper throughout the millennia. Located near the ore deposits, many of these heaps were destroyed by modern mining activities and some are still under immediate threat. Far from the more attractive settlements along the coasts, the slag heaps have only recently been systematically investigated and their dating is still problematic (Kassianidou 2003, 2004). The current uc san diego-University of Cyprus project focuses on two of the largest slag heaps of the island (skouriotissa and Mitsero) as well as several smaller deposits, located in the northern foothills of the Troodos mountains. projgall/ben-yosef330/ Modern day mining on Cyprus Turkey's Amazing Underground Cities several underground cities are open to visitors. The largest of these, at Derinkuyu has 8 levels open to the public, there may be as many as 12 more levels as yet unexcavated.

It is estimated that 60 tons of flint could have produced as many as 10,000 of the polished stone axes, which were the mines' main product. Extrapolation across the site suggests that Grime's Graves may have produced around 16-18,000 tonnes of flint across the 433 shafts recorded to date. However, there are large areas of the site covered by later activity which are believed to conceal many more mineshafts. There were other hard stones used for axe manufacture, those of the langdale axe industry and Penmaenmawr in North Wales being traded across Europe illustration of mining shaft There is an interestin ancient road that runs from the area of Grimes Graves and Stone henge. The road is called Icknield way and is a part of a bigger network of roads running throughout neolithic owl England. The name Icknield has been associated with 'tin port' in later languages. Map courtesy of "The Great Orme Ancient Copper Mines on the Creuddyn Peninsula dates back to the Bronze age. The mines were originally dug out over 3,500 years ago by miners using nothing more than stone and bone tools.

essay on enviroment pollution

Short, essay on, environmental, pollution

An upper 'topstone' and middle 'wallstone' seam of flint was dug through on the way to the deeper third 'floorstone' seam which most interested the miners. In order to remove the chalk efficiently, the ancient miners built wooden platforms and ladders as they dug downwards and piled proposal the spoil around the shaft opening using turf revetments to hold it in place for the season, when the shaft and all its galleries. The landscape around Grime's Graves has a characteristic pockmarked appearance caused by the infilled shafts. This is probably what inspired the later Anglo-saxon inhabitants of the area to name it after their god Grim (literally the masked, or hooded one, a euphemism for Woden). Although the pagan Anglo-saxons seem to have had some idea of what the site was, as the name of the site means literally 'the masked one's quarries (or Grim's Graben Once they had reached the floorstone flint, the miners dug lateral galleries outwards from the. The medium-depth shafts yielded as much as 60 tons of flint nodules, which were brought to the surface and roughly worked into shape on site. The blank tools were then possibly traded elsewhere for final polishing.

 The video was posted by rafal Swieki who is an expert in this field. V2wtNK6cVRcU ml Information video and encouragement generously provided by rafal Swiecki grime's Graves also known as Grim's quarry is a flint mining complex dating to the neolithic period with the earliest evidence of activity from around 3000. It comprises 433 mineshafts, pits, quarries and spoil dumps which survive as earthworks covering an area.6 hectares. It is one of just ten neolithic flint mines known to have existed in England, of which six still exist as earthworks. Hob_id382869 Arial view of Grimes Grave indentations caused back-filled  settling The scheduled monument extends over an area of some 37 ha (96 acres) and consists of at least 433 shafts dug into the natural chalk to reach seams of flint. The largest shafts are more than 14 m (40 feet) deep and 12 m in diameter at the surface. It has been calculated that more than 2,000 tonnes of chalk had to be removed from the larger shafts, taking 20 men around five months, before stone of sufficient quality was reached.

Essay on, environment, pollution, complete, essay for Class 10, Class

essay on enviroment pollution

Essay on, environmental, pollution for Children, Students and Others

Arial view of flint mines at Casa montero "The neolithic flint mine of Casa montero was discovered as a result of the Archaeological Impact Assessment of Madrid's M-50 essay highway belt (Figure 1). The site is located south-east of Madrid, in the centre of Iberia. An open-area excavation.2 ha has documented over 3500 vertical shafts (Figure 2 with a mean width of 1m and depths of up to 7m (Figure 3). The site is located in a river bluff, where no contemporary neolithic settlements are known. It seems to be the result of reiterative short-term seasonal expeditions.

Shafts rarely cut previous extracting pits, suggesting that the time-span of all mining activity was relatively short, perhaps less than a few centuries. The flint lacks evident aesthetic qualities. Its petrological composition and knapping qualities vary both horizontally and vertically throughout the four flint layers documented in the site. Flint was mined and knapped in order to obtain blades and occasionally flakes, products that would be finally transported off-site. The remaining waste was dumped back into the shafts." /projgall/diazdelrio307/ banka drilling This method of drilling is still practiced today and uses technologies that would have been available in ancient times. The video link below is important to watch as one can clearly see how core drilling for samples reviewer takes relatively small numbers of people.

Mining was practiced by the first agricultural communities that appeared in Europe, and their mines have been discovered in Italy, Spain, and Poland. The defensola a mine from the gargano promontory in Italy dates to the late 6th and early 5th millennium bc, and it demonstrates a rare system of adit mining. Underground exploitation at Spiennes and Rijckholt. Geertruid can be dated to the latter half of the 5th and the 4th millennium bc, and is affiliated with communities of advanced agricultural economies practising animal husbandry on a large scale. Striped flint was mined at Krzemionki opatowskie in the late 4th and the 3rd millennium. Mining activity at Grimes Graves was concentrated around the middle of the 3rd millennium.


The latest of the european flint mines was discovered at the zele site at wierzbica, near Radom in Poland, where shafts were dug as late as the end of the Bronze age, around 1000.discovery of other similar sites, including Cissubry and Grimes Graves in England, numerous flint mining sites. Geertruid mine in the dutch Limburg.". Courtesy of mount Gargano mine reused by later cultures. Image courtesy of ml "The authors present the results of research carried out on neolithic mine of Defensola.  The main features of the structure, together with excavation techniques and finds collected, are described.  The intensive flint exploration at Defensola allows a connection to an industrial type activity, along with surplus production.  The high level of complexity and extensions of the mine are part of a composite regional frame in which flint exploitation lasted over 3,000 years from 8,000 years ago to 5,000 years ago.  In this direction both Defensola mine and the gargano area played an important role in activities in south eastern Italy.".

Essay on, environmental, pollution

Its shafts are salon among the deepest ever sunk to extract this raw material. The exceptional size of the blocks reviews of flint that were extracted shows how skilled the neolithic miners must have been. The technique of 'striking which is characteristic of Spiennes, was developed to allow these blocks to be extracted. The quality of the worked artefacts is one of the most remarkable illustrations of the great skill of the craftsmen, who produced extremely regular blades and axes 25cm long." mine shafts at Spiennes "The Spiennes mines, covering more than 100ha, are the largest and earliest. The mining site, 6 km south-east of Mons, occupies two chalk plateaux separated by the Trouille valley, a tributary of the haine. The mines were in operation for many centuries and the remains vividly illustrate the development and adaptation of technology by prehistoric man over time in order to exploit large deposits of a material that was essential for the production of tools and implements, and hence. Underground flint mining was taking place there from the second half of the 5th millennium bce (between 44 bce making Spiennes one of the oldest mining sites in Europe. Several dates show that mining activity went on, apparently without interruption, from the beginning of the middle neolithic until the late neolithic period." ml "The flint so obtained, usually in processed form, was an attractive commodity exchanged between settlements and regions, sometimes in multiple directions and covering. Several types of flint mined in the vistula catchment area were distributed more than 400 km away.

essay on enviroment pollution

Four of these metals, arsenic, antimony, zinc and bismuth, were discovered in the thirteenth and fourteenth centuries, while platinum was discovered in the 16th century. The other seven metals, known as the metals of Antiquity, were the metals upon which civilization was based. These seven metals were: (1) Gold (ca) 6000BC (2) Copper ca) 4200BC (3) Silver ca) 4000BC (4) lead, (ca) 3500BC (5) Tin, (ca) 1750BC (6) Iron, smelted, (ca) 1500BC (7) Mercury, (ca) 750bc, these metals were known to the mesopotamians, Egyptians, Greeks and the romans. Of the seven metals, five can be found in their native states,. G., gold, silver, copper, iron (from meteors) and mercury. However, the occurrence of these metals was not abundant and the first two metals to be used widely were gold and copper. And, of course, the history of metals is closely linked to that of coins and gemstones. Early evidence of Mining and Trade in Europe "The flint mines at Spiennes are outstanding examples of the lithic mining of flint, which marked a seminal stage of human technological and cultural progress. Spiennes is one of the best known examples of prehistoric flint mining.

estimated that at least 1 200 tons of soft haematite ore, rich in specularite, had been removed in ancient times." ml more mundane or domestic uses of red ochre (derived from hematite, fe2O3) are known from the ethnographic record of modern. Archeological studies have identied ochre powder as an ingredient in the manufacture of compound adhesives (10). Thus, the use of iron oxides for symbolic purposes should be viewed as a hypothesis that needs to be tested, rather than simply assumed. Full.pdf, process Metallurgy is one of the oldest applied sciences. Its history can be traced back to 6000. Admittedly, its form at that time was rudimentary, but, to gain a perspective in Process Metallurgy, it is worthwhile to spend a little time studying the initiation of mankind's association with rrently there are 86 known metals. Before the 19th century only 24 of these metals had been discovered and, of these 24 metals, 12 were discovered in the 18th centur. Therefore, from the discovery of the first metals - gold and copper until the end of the 17th century, some 7700 years, only 12 metals were known.

Excerpt courtesy of m/2008/03/04/4 ngwenya mountain lion cave in Swaziland "Adrian Boshier visited the lion cavern site thesis and collected stone tools, made of dolerite which is foreign to the area. The tools were unlike those normally found on a stone age site, being more specialised, consisting of choppers, picks and hammerstones. Professor Dart identified them as mining tools. The tools were not confined to the surface layers but were scattered throught huge depressions which should have been solid haematite. They were lying among and beneath thousands of tons of red iron oxide, down in depth to forty feet or e next question was how old were these mines? The archaeologist, peter beaumont, produced evidence of mining in the middle stone age, later stone age and iron age. At Ngwenya, middle Stone Age man tunnelled adits into the precipitous western face in search of iron pigments, the weathered ochreous forms of haematite (libomvu) near the surface, and the harder black glistening form of the ore called specularite (ludumare). In 1967 charcoal nodules from some of the more ancient adits were sent to both Yale and Groningen radiocarbon laboritories where carbon 14 testing was carried out.

Writing an, essay about, environmental, pollution : Basic guidelines

?, ),?, -,.,.,.,.,. 23.,.,.,., 22, 2007., 8, 2010., 20, 1992., 2000. Mining is as old as the hills. Earliest evidences of Mining and Trade "Conclusively the miners were pigment or cosmetic miners. And this has been supported from many sources. Among man's earliest funerary practices was the sprinkling of red ochre on remote the corpse prior to burial. Digs in Europe, the middle east and the southern Cape show that this was a standard practice. Theres a neanderthal chert mine in Bulgaria, over 40,000 years old, tying with the lions cave haematite mine in Swazi for the position of oldest known mine.".


Essay on enviroment pollution
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