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	GENUKI: The National Gazetteer (1868) - Llanfair Is Gaer
		It is situated on the shore of the Menai Strait, and includes the township of Brynffynon and port of Dinorwig.
		"DINORWIC, (or Dinorwig, Port), in the parish of Llanfair-is-Gaer, in the county of Carnarvon, 2½ miles N.E. of Carnarvon.
		The situation of this place is highly advantageous for commerce : within the parish is Port Dinorwig, the shipping-place for the produce of the slate quarries in the adjoining parish of Llandeiniolen, from which it is brought to this place by a rail-road seven miles in length.
	www.genuki.org.uk:8080 /big/wal/CAE/LlanfairIsGaer/Gaz1868.html (767 words)

	Dinorwig - Definition, explanation
		Dinorwig is a 1320 MW pumped storage hydroelectricity scheme in the Pass of Llanberis on the edge of the Snowdonia national park in north Wales.
		It is comprised of 16 km of tunnels, 1 million tons of concrete, 200,000 tons of cement and 4,500 tons of steel, housed beneath the mountain Elidir Fawr.
		The scheme was constructed in an the abandoned Dinorwig slate quarry.
	www.calsky.com /lexikon/en/txt/d/di/dinorwig.php (282 words)

	Slate Trades Journal: The Roofing Slates of Dinorwig
		Dinorwic [Dinorwig] slate had been used, and he found that they were absolutely as good as new.
		Yet Dinorwic [Dinorwig] or Port Dinorwic [Y Felinheli] slate, as it is also called, withstands this severe strain with complete equanimity.
		If overnight you affix a ring of putty to a Dinorwic [Dinorwig] slate, and fill the circle with water, no moisture will be found on the underside in the morning; in the case of inferior slate the water will gradually percolate through the pores till it readies the lower surface.
	www.llechicymru.info /slatetradesjournal.cymraeg.htm (2812 words)

	Dinorwig - Biocrawler (Site not responding. Last check: )
		Dinorwig is a 1320 MW pumped storage hydroelectricity scheme in the Pass of Llanberis on the edge of the Snowdonia national park in north Wales.
		It is comprised of 16 km of tunnels, 1 million tons of concrete, 200,000 tons of cement and 4,500 tons of steel, housed beneath the mountain Elidir Fawr.
		The scheme was constructed in an the abandoned Dinorwig slate quarry.
	www.biocrawler.com /encyclopedia/Dinorwig (173 words)

	International Water Power and Dam Construction (Site not responding. Last check: )
		Dinorwig’s reversible pump/turbines are capable of reaching maximum generation in less than 16 seconds.
		Dinorwig has been designed to have an operational life of 40 years, meaning a thorough maintenance schedule is essential to keep the power station’s six generators in reliable working condition.
		Dinorwig is the largest scheme of its kind in Europe...
	www.waterpowermagazine.com /story.asp?sectionCode=46&storyCode=2035771 (721 words)

	Wales Underground - Welsh Slate Museum (Site not responding. Last check: )
		Roofing slates from Dinorwig and other North Wales quarries were not only shipped all over Britain but also found their way to continental Europe and North America where they were used to meet the expanding housing and factory needs in the industrial cities.
		Dinorwig was the second largest slate quarry in the world, overtaken only by the neighbouring Penrhyn quarry, which extracts the same Cambrian slate veins.
		Dinorwig supplied the stone dais upon which Prince Charles sat for his Investiture at Caernarfon Castle, but the day after the quarry’s closure was announced and 300 men were made redundant.
	www.wales-underground.org.uk /slate/history.shtml (1100 words)

	Dinorwig
		PDA were asked to investigate a tonal noise problem inside a planning office at Dinorwig Power Station.
		Dinorwig Power Station is situated in Llanberis, Gwynedd and is in effect a large capacitor.
		By aurally tracking the source down it was possible to solve quite a complex problem and provide an easy solution, whereas some theoretical solutions which had been previously offered such as floating floors and walls would have been very expensive and most importantly of all, not worked.
	www.pdaltd.com /Pages/dwig.htm (1202 words)

	First Hydro Dinorwig Power Station
		Dinorwig is the largest scheme of its kind in Europe.
		Dinorwig is comprised of 16km of underground tunnels, deep below Elidir mountain.
		Dinorwig's reversible pump/turbines are capable of reaching maximum generation in less than 16 seconds.
	www.fhc.co.uk /dinorwig.htm (188 words)

	Energy Resources: Pumped storage reservoirs
		This is one of the reasons that the Dinorwig site was chosen - there was a big height difference between two existing lakes, so less work was needed to build the station.
		Each of the six generators is capable of producing 288 MegaWatts of power at 18,000 Volts, which is stepped up to 400,000 Volts by transformers and sent along underground cables to be fed into the "supergrid", which is the long-distance network of the National Grid.
		Dinorwig has "pump/turbines", which can be used both as pumps for getting water from the lower to the upper reservoirs, and as turbines for generating electrical power.
	www.darvill.clara.net /altenerg/pumped.htm (556 words)

	BBC - h2g2 - The Electric Mountain: Dinorwig, Gwynedd, UK
		Dinorwig is an example of a pumped storage hydroelectric plant (there is another at Ffestiniog, also in Snowdonia).
		During the day Dinorwig's six turbines supply energy to the National Grid, and during the night power is fed from the grid to recharge the reservoirs.
		In addition, Dinorwig can be brought from standby to peak capacity in approximately twelve seconds, making it ideal for coping with sudden unexpected 'spikes' in demand.
	www.bbc.co.uk /dna/h2g2/A958818 (792 words)

	Dinorwig Slate Mine Information and Photographs
		If you would like to visit Dinorwig Slate Mine then click here to add an event to the calendar.
		You are welcome to use this album for uploading archive or historical images of Dinorwig.
		You are welcome to use this album for uploading images of Dinorwig.
	www.aditnow.co.uk /mines/Dinorwig-Slate-Mine (466 words)

	Llanberis (Site not responding. Last check: )
		Dinorwig power station is the largest pumped storage hydroelectric facility inside a mountain.
		Dinorwig's reversible pump/turbines are capable of reaching maximum generation from zero output in less than 16 seconds.
		Dinorwig is on the boundary of the Snowdonia National Park - an area universally recognised for its breathtaking beauty.
	park6.wakwak.com /~taka/eng/Excursion/llanberis.htm (354 words)

	Excite Deutschland - Science - Technology - Energy - Storage - Pumped Storage - Dinorwig
		Excite Deutschland - Science - Technology - Energy - Storage - Pumped Storage - Dinorwig
		Energy Resources article uses Dinorwig as an example.
		Includes Introduction, How It Works, and More details about Dinorwig.
	www.excite.de /directory/Science/Technology/Energy/Storage/Pumped_Storage/Dinorwig (56 words)

	Gathering the Jewels:: Industry :: Slate industry :: Dinorwig Quarry
		Here you will find over 20,000 images of objects, books, letters, aerial photographs and other items from museums, libraries and record offices in Wales.
		Theme: Photographs of the Dinorwig Quarry workshops, Llanberis, 1969
		Health advice given to the Dinorwig quarrymen by the quarry doctor, 1894
	www.tlysau.org.uk /en/subjects/1401 (91 words)

	Wales Underground - Electric Mountain (Site not responding. Last check: )
		Dinorwig can produce electricity (1320 megawatts of power) in 12 seconds when there is a sudden surge in demand that cannot be met by power stations already connected to the grid.
		Most conventional power stations take 12 hours to start up from cold and 45 minutes to switch to the grid if they are on ‘hot standby’ but not synchronised to the grid.
		When the extra power is not needed the turbines can be reversed and water is then pumped back to Marchyn Mawr where it is ready to use again when the need arises.
	www.wales-underground.org.uk /electric/index.shtml (545 words)

	Dinorwig power station at AllExperts
		Dinorwig power station is a 1728 MW pumped storage hydroelectric scheme, near Dinorwig, in the Pass of Llanberis on the edge of the Snowdonia national park in north Wales.
		The scheme was constructed in the abandoned Dinorwig slate quarry.
		Water is stored at a high altitude in Marchlyn Mawr reservoir and is discharged into Llyn Peris through the turbines during times of peak electricity demand.
	en.allexperts.com /e/d/di/dinorwig_power_station.htm (338 words)

	Snowdonia holiday accommodation near Snowdonia National Park - for self catering cottage holidays in Wales, UK
		Inside the mountain between the two lakes is the largest man made cave with 6 turbines that supply energy to the National Grid.
		Dinorwig Electric Station can be brought from standby to peak capacity in approximately twelve seconds, making it ideal for coping with sudden unexpected demands in electricity.
		Admission to the visitor centre is free; there is a charge for the hour long tour of Dinorwig Power Station.
	www.lleynholidays.co.uk /Hydro-electric-mountain.php (368 words)

	BBC - h2g2 - The Electric Mountain, Dinorwig UK
		This very rapid demand for large quantities of electricity could not be met by standard power stations, for them to significantly increase their output often took hours, sometimes even days.
		The solution was Dinorwig - A power station that within seconds of being turned on could produce enough electricity to Power the whole of wales, and sustain that power for up to six hours.
		The basic idea behind Dinorwig is quite simple, the power station consists of two lakes, Marchlyn Mawr and Llyn Peris each one and a half kilometred from the other, with a height drop of 500metres separating them.
	www.bbc.co.uk /dna/h2g2/A754698 (710 words)

	Picture of Dinorwig Slate Mine - Rock climber (Site not responding. Last check: )
		Dinorwig is definately a multi activitity quarry, visited by walkers, cavers and climbers.
		Rock climbers are frequent and you can often see where they've absailed off half way up the rock face.
		You are responsible for your own actions at all times, and by browsing this site you indicate you have read and fully accept the terms of the
	www.mineinfo.co.uk /view_picture.asp?id=2815 (133 words)

	Travel Dispatches - CAUSE 2003
		The power station which is completely underground is composed of a Pelton Wheel Turbine commissioned in Cwm Dyli built in Nant Gwynantin in 1906 next to Snowdon (highest mountain in Wales).
		The unit was No. 1 of 4 generating a total of 6 megawatts to supply the slate quarries of Blaenauffestiniog, Dinorwig, Bethesda, and Dyffryn Nantle.
		The first main tunnel at Dinorwig collapsed; they had to dig and rebuild a new tunnel for the main tunnel.
	www.ems.psu.edu /~elsworth/courses/cause2003/travel/may21dispatch.htm (624 words)

	Energy Case Studies: Hydro \| HG Systems Ltd
		It recently became necessary to refurbish the sequence controls on each generator/pump set at Dinorwig and at the same time gather performance data for the Energy Trading computer system.
		HG Systems had previously provided software for colour graphics displays at Dinorwig and under this contract is responsible for integrating the sequence controls, displays and data gathering into one network.
		Dinorwig is able to respond very quickly to sudden load changes on the National Grid.
	dspace.dial.pipex.com /town/pipexdsl/s/aseq32/hgs/energy_hydro.htm (253 words)

	dinorwic (Site not responding. Last check: )
		Prif ran cyfadail chwarel lechi Dinorwig, yr ail chwarel fwyaf yn y byd ar un adeg ar ôl Chwarel y Penrhyn.
		Yn ystod y bedwaredd ganrif ar bymtheg unwyd y gweithfeydd hyn i ffurfio gwahanol adrannau chwarel Dinorwig, a gosodwyd rheilffyrdd cyfuchlinol a phlanau ar oleddf i gysylltu wyneb y graig a’r tomenni, llochesi gwneuthurwyr y llechi a’r melinau.
		O ran golwg mae chwarel Dinorwig yn safle trawiadol yn ymestyn dros ardal sylweddol.
	www.heneb.co.uk /arfonnorthwelsh/arfon11w.html (282 words)

	Mark Bailes
		First Hydro Company is responsible for the management and operation of the pumped storage power stations at Dinorwig and Ffestiniog in the Snowdonia region of Wales.
		Both Ffestiniog and Dinorwig compete daily to sell their power into the electricity market of England and Wales.
		Each of Dinorwig's six generating units can produce 288MW of electricity, offering a combined output of 1728MW.
	www.silsoe.cranfield.ac.uk /iwe/students/markbailes.htm (404 words)

	Llanberis at AllExperts
		Llanberis is a village in North Wales, lying beside the Llyn Padarn lake in Snowdonia.
		The village originally grew around the slate quarrying industry, but since the closure of the quarries the main employers have been tourism and the Dinorwig power station, a pumped storage hydroelectric station.
		Tours of Dinorwig power station are available from a purpose built visitor centre.
	en.allexperts.com /e/l/ll/llanberis.htm (262 words)

	Buy Dinorwig Power Station on eBay
		I'm going to Dinorwig Power Station next week and I just googled it to get info.
		Dinorwig's great - you can get a coach ride up through the mountain during the day, when there's no water rushing down through the turbines.
		Did some of the computer controls for both Ffestiniog and Dinorwig many many years ago.
	www.bikereader.com /forum/index.php?topic=24805.0 (723 words)

	Tourist Attractions in Snowdonia Wales - visit Electric Mountain, Llanberis
		This starts with a sound and vision spectacular at Electric Mountain, illustrating the role that pumped storage plays in ensuring the country’s electricity demands are always met.
		Both Electric Mountain, and Dinorwig Power Station blend mystically into this beautiful area of Wales.
		Additionally, there are many areas around Electric Mountain and Llyn Padarn where families can picnic, stroll or just marvel at the magnificent views.
	www.star-attractions.co.uk /attractions/electric_mountain/electric_mountain.htm (487 words)

	uksearch.com : Science: Technology: Energy: Storage: Pumped Storage: Dinorwig
		Top: Science: Technology: Energy: Storage: Pumped Storage: Dinorwig
		Dinorwig - Dictionary of Energy entry on north Wales facility beneath Elidir Mountain.
		Dinorwig - first page of First Hydro Company (owner) presentation about pumped storage scheme.
	www.uksearch.com /scripts/dir.aspx?cat=Top%2fScience%2fTechnology%2fEnergy%2fStorage%2fPumped_Storage%2fDinorwig (86 words)

	Gathering the Jewels:: Industry :: Slate industry :: Dinorwig Quarry
		Topics > Industry > Slate industry > Dinorwig Quarry
		Theme: Photographs of the Dinorwig Quarry workshops, Llanberis, 1969
		Health advice given to the Dinorwig quarrymen by the quarry doctor, 1894
	www.gtj.org.uk /en/subjects/1401 (91 words)

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