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450:, where a 3,000 lb (1,400 kg) decoupled test and a 1,100 lb (500 kg) coupled test would be carried out in andesite rock at a depth below surface of 1,700 ft (520 m) and the results compared. The charge sizes were chosen so that if the decoupling worked as predicted, the seismic signals would be similar in intensity.
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Ltd began work on both the south and north sides of the hill to create a tunnel which would be 2 miles (3.2 km) long. The southern portal was at Silver Hill, and that at the north was near a small mine called
Excelsior. However, due to the toughness of the underlying bedrock, progress was costly
412:
and lengthened the tunnel running south to meet it. However, this too was proving too costly, and wound up in 1885, before it was half-way complete. Several later attempts were made to extend the
Excelsior Tunnel, but by 1938, it was still only 2,400 feet (730 m) long.
408:
and slow, and ceased about a year later. In 1881 a new company named Kit Hill Great
Consols took over the setts of Kit Hill United and Excelsior mine. They deepened the North Engine Shaft to 112
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tests, where charges of 3,000 lb (1,400 kg) would be detonated in 30 ft (9.1 m) diameter cavities at depths of 800 ft (240 m) in a salt mine in
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Phase A: Small charges fired in a 6 ft (1.8 m) diameter cavity in granite and shale at depths of 100 to 300 feet (91 m) in the
Excelsior Tunnel at Kit Hill.
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mine (which worked westwards towards Kit Hill). This was a very early mine, and evidence shows it may have started in the 17th century: it closed in 1885.
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244:, and consists of some 400 acres (152 hectares), making it the most dominant landscape feature in East Cornwall. Kit Hill is the highest point in the
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Kit Hill Summit Mines (which included a windmill near the present stack). These mines and shafts started about 1826: Kit Hill United closed in 1864.
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barrows. The area around these is maintained by a ranger and volunteers, who also generally keep the vegetation on the hill under control.
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281:. Kit Hill Country Park has a high wildlife population including deer and badgers, rabbits, rare moths and butterflies.
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266:. This caused the formation of many mineral deposits that were mined extensively in the 18th and early 19th centuries.
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Some remnants, mainly the granite blocks, of the line can be found on the northern slopes of the
Country Park site.
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228:(which includes the hill and surrounding areas), was given to the people of Cornwall in 1985 to mark the birth of
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Construction of The Tamar, Kit Hill & Callington
Railway started in 1864. The name was later changed to the
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273:, Kit Hill is probably the best viewpoint in the southeast of Cornwall, with views of the Tamar valley,
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took over operations, and used the tunnel for underground explosions. The activities were part of
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The ornate mine chimney, now clad in a range of transmitters and aerials, on top of Kit Hill.
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The
Country Park is steeped in mining history. Metals extracted included
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The Mines & Mineral
Railways of East Cornwall & West Devon
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Operation
Orpheus - Atomic Energy Authority(Excelsior Tunnel)
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337:= "Stallion Hill", which is usually interpreted as being at
624:(2nd ed.). Fowey: Cornwall Editions Ltd. p. 68.
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Plymouth, Devonport and South
Western Junction Railway
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reports that in 835 (corrected by scholars to 838 AD)
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549:
List of place-names agreed by the MAGA Signage Panel
284:On the summit of Kit Hill is an artificial fort (a
157:), at 334 metres high, dominates the area between
394:South Kit Hill Mine was worked from 1856 to 1884.
197:can still be seen on the hill. It is one of five
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385:East Kit Hill Mine was worked from 1855 to 1909.
424:, and the Kit Hill events were the first part:
538:Place-names in the Standard Written Form (SWF)
254:The hill was formed in the same way as nearby
344:Other notable artifacts on Kit Hill include
487:connected with it. It amalgamated with the
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467:'s river frontage, past Kelly Quay &
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514:section still survives as part of the
475:quarries, along the northern flank of
299:, built in the style of a low-walled
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599:Exploring Cornish Mines - Vol. 4.
249:Area of Outstanding Natural Beauty
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648:. Truro: D. Bradford Barton Ltd.
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201:in Cornwall, the four others are
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644:Barton, Denys Bradford (1964)
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431:Phase B: Participation in the
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1:
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461:East Cornwall Mineral Railway
757:Military history of Cornwall
752:Bronze Age sites in Cornwall
560:Cornish Language Partnership
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173:. The word 'Kit' comes from
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185:(and not specifically the
59:334 m (1,096 ft)
747:Country parks in Cornwall
499:and onto the junction at
403:In 1877 a company called
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269:As the highest point of
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418:Atomic Energy Authority
399:Atomic Energy Authority
291:) and a folly built by
442:Phase C: The tests at
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685:Kit Hill Country Park
479:to below Kit Hill at
416:However, in 1959 the
378:The main mines were:
314:Anglo-Saxon Chronicle
232:, by his father, the
226:Kit Hill Country Park
18:Kit Hill Country Park
742:Marilyns of Cornwall
713:50.51887°N 4.29360°W
325:defeated an army of
258:by the intrusion of
240:). It is managed by
709: /
622:Cornwall: A History
718:50.51887; -4.29360
615:See, for example:
578:. Cornwall Council
554:2013-05-15 at the
543:2013-05-15 at the
49:Highest point
737:Hills of Cornwall
516:Tamar Valley Line
422:Operation Orpheus
264:sedimentary rocks
215:Hensbarrow Beacon
181:, a reference to
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618:Payton, Philip
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580:. Retrieved
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321:king of the
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246:Tamar Valley
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211:Carnmenellis
195:sparrowhawks
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716: /
512:Bere Alston
501:Bere Alston
483:, where an
323:West Saxons
279:Bodmin Moor
256:Bodmin Moor
207:Brown Willy
203:Watch Croft
175:Old English
169:, England,
163:River Tamar
75:Parent peak
731:Categories
701:50°31′08″N
582:6 February
576:"Kit Hill"
525:References
508:Gunnislake
481:Kelly Bray
473:Gunnislake
469:Drakewalls
350:Bronze Age
335:Hengestdun
159:Callington
138:Landranger
65:Prominence
704:4°17′37″W
437:Louisiana
346:Neolithic
286:Civil War
221:Geography
155:Bre Skowl
96:Geography
55:Elevation
620:(2004).
552:Archived
547: :
541:Archived
497:Calstock
471:and the
465:Calstock
455:Railways
374:tungsten
303:castle.
275:Dartmoor
191:Buzzards
187:red kite
167:Cornwall
161:and the
147:Kit Hill
130:Topo map
122:SX375713
105:Cornwall
101:Location
32:Kit Hill
448:Cumbria
410:fathoms
331:Cornish
327:Vikings
307:History
289:redoubt
151:Cornish
116:OS grid
90:Marilyn
85:Listing
652:
628:
603:
495:above
370:copper
366:silver
356:Mining
319:Egbert
493:Tamar
301:Saxon
260:magma
650:ISBN
626:ISBN
601:ISBN
584:2013
506:The
372:and
348:and
329:and
311:The
277:and
213:and
193:and
179:kite
177:for
79:None
510:to
446:in
362:tin
333:at
189:).
140:201
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592:^
567:^
558:.
518:.
503:.
368:,
364:,
341:.
251:.
217:.
209:,
205:,
171:UK
153::
135:OS
107:,
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586:.
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376:.
236:(
149:(
20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
