dumnonia

Friday, 4 May 2018

Skeletons uncovered at Ipplepen reveals major Roman cemetery

Skeletons uncovered at Ipplepen reveals major Roman cemetery

15 ancient skeletons have been discovered on an archaeological dig in Ipplepen, a major Romano-British settlement in Devon and now the best preserved Roman cemetery. University of Exeter archaeologists and a team of students and volunteers uncovered the human remains during an excavation of a Roman Road and found a roadside cemetery, the like of which has never been seen in the region.
The significance of the discovery took on further importance when one of the skeletons was found to date from around 250 to 350 years after the Roman period, an era often referred to as the ‘dark ages’. These discoveries are of both national and regional value in providing a glimpse into Romano-British life and how the settlement continued into post-Roman times.
The project team are still in the early stages of analysis, and it is hoped that research will be able to provide valuable information about the life of individuals including age, diet, and disease. The team are also hoping isotope analysis will indicate the geographic origin of individuals. Stable isotopes in water are taken into tooth enamel when a person is young. As the isotope signatures in water vary geographically, it is possible to indicate where a person grew up. The team hope to be able to see if individuals are from Devon or from further reaches of the Roman Empire. Additional radiocarbon dating is also needed to help determine when the roadside cemetery first came into use.
Danielle Wootton, the Devon Finds Liaison Officer for the Portable Antiquities Scheme, based at the University of Exeter’s Archaeology Department said:“The geophysics results indicated the features were interesting, but we didn’t know what the level of preservation or the extent would be until we started excavating last summer.  As the excavation progressed, it became clear that we were dealing with the largest Romano-British cemetery discovered in Devon and that it had huge potential to develop our understanding of settlements and how people lived in the southwest 2,000 years ago. Then the radiocarbon date of AD 655 – 765 brought even further revelations; everyone was very surprised. It suggests continuation of the settlement after the Roman period and shows that life carried on at Ipplepen rather than falling out of use.”
Sam Moorhead, National Finds Adviser for Iron Age and Roman coins at the British Museum said:“We always thought that Ipplepen was special, but the excavations continue to throw up new surprises.”
Danielle Wootton added: “The site was originally discovered by Jim Wills and Dennis Hewings, who reported their metal-detected finds with the Portable Antiquities Scheme. Since then, the excavation has gone from strength to strength; it’s been great to have the support of the community; hundreds of people visited our open day last year and villagers have been fantastic.”  
This summer the Ipplepen site will be excavated on 6- 31 July, providing another opportunity for archaeologists and volunteers to further explore the location where the cemetery and Roman Road were found. This year additional archaeological knowledge and expertise will be brought to the dig by University of Exeter archaeologists Dr John Davey and Professor Stephen Rippon. The project is able to offer 20 free volunteer places (five each week) to Devon residents. Excavation volunteers must be able to commit to a week and enjoy working outdoors in all weathers. There will be a site open day for visitors with guided excavation tours and opportunities to see some of the finds. Further information for the Ipplepen Field School is on the University of Exeter, Archaeology website and the date of the Open Day will be announced in the local press at the end of June.
County Archaeologist Bill Horner commented:“This is one of the most important discoveries in Devon in recent years. The concentration and range of finds and archaeological features is really exciting. It is also a very good example of how a real partnership can get so much more than just objects and reports out of archaeology. It has been great playing a part in the discovery of such a site, to work alongside the University staff and students, and British Museum experts, but it has been a real delight to see the local community embrace the project and get so hands-on in exploring their own and the county’s heritage.”
BBC 4’s Digging for Britain new series will feature the huge Roman settlement in Ipplepen and show the results of this exciting find as part of the series 3 West of England programme on Tuesday 10 February at 8pm. Archaeologists from the University of Exeter feature in the popular programme which focuses on Britain’s best excavations of 2014.

The project is supported by the University of Exeter, the Portable Antiquities Scheme, the British Museum and Devon County Council. The radiocarbon testing was generously funded by Teignbridge District Council.

Roman cemetery

A "major" Roman cemetery has been discovered during an archaeological dig in Devon.
Experts found 15 skeletons during the excavation of a Roman road at Ipplepen, near Exeter.
Tests on one of the skeletons showed the settlement was in use up to 350 years after the Roman period ended, which has surprised experts.
Archaeologists said the discoveries were both nationally and regionally important.


Danielle Wootton, from the Portable Antiquities Scheme, said: "As the excavation progressed, it became clear that we were dealing with one of the most significant Romano-British cemeteries discovered in Devon and that it had huge potential to develop our understanding of settlements and how people lived in the South West 2,000 years ago."
The Romans invaded Britain in 43 AD and their reign ended in about 410 AD.
Ms Wootton said the discovery of a body from up to 350 years after they left "suggests continuation of the settlement after the Roman period and shows that life carried on at Ipplepen rather than falling out of use."
The team, from the University of Exeter, hopes further research will more about the ages of those who died, along with the diets and diseases they had.
Bill Horner, county archaeologist, said: "This is one of the most important discoveries in Devon in recent years.
"The concentration and range of finds and archaeological features is really exciting."
The Ipplepen project is supported by the University of Exeter, the Portable Antiquities Scheme, the British Museum and Devon County Council.

Saturday, 28 April 2018

Bottle Hill Mine is situated just over two miles northeast of Plympton.



Bottle Hill Mine is situated just over two miles northeast of Plympton.
 Otherwise known as Old Bottle Hill Mine,

 due to the fact that it dates from the early 1700's,
 the mine worked four E-W tin and copper lodes, known as North Lode (Blanchard's), Main Lode, Buckinghouse (Caunter) Lode and South Lode. It also worked a N-S lead bearing crosscourse.
Production records report that early production was tin and that between 1823 and 1835 - 1800 tons of 4.75% copper ore was raised. Between 1837-39 and 1852-85 - 640 tons of black tin was produced. In the period 1856 to 1875 - 200 tons copper ore was raised. In addition the mine produced 30 tons arsenopyrite and 13 tons of arsenic.

southwestern slope of Hemerdon Bal



Hemerdon Mine (approx. 0.2 km; TUNGSTEN & TIN)
Bottle Hill (approx. 0.8 km; COPPER, TIN & ARSENIC)
Wheal Mary Hutchings (approx. 0.9 km; TIN & ARSENIC)
Lobb Mine (approx. 0.9 km; TIN & ARSENIC)
Sidney Mine (approx. 2.4 km; TIN & ARSENIC)
Borringdon Consols (approx. 4.5 km; LEAD, SILVER, ZINC, ARSENOPYRITE & COPPER)
Cann Mine (approx. 4.9 km)
Shaugh Mine (approx. 6.0 km; IRON)
Ivybridge Consols (approx. 8.1 km; SILVER-LEAD)
Kit (approx. 9.0 km; TIN)

Including Mary Hutchings, the mines lie on the southwestern slope of Hemerdon Bal, about two miles northeast of Plympton. Mary Hutchings sett lay to the west working a single lode from Engine Shaft. Hemerdon Consols worked three lodes.

Production records report that for Mary Hutchings between 1866 and 1880 - 426 tons of black tin. Between 1873 and 1879 - 263 tons of arsenic. 188 tons of mispickel were raised between 1874-76. For Hemerdon Consols in 1855-56 23 tons of black tin were raised.

Drakelands Mine The Drakelands Mine is a recently constructed world-class tungsten and tin mine



Drakelands Mine

Location




Processing


The Drakelands processing plant produces tungsten and tin concentrates. Ore is fed into the processing plant where it is crushed and ground to liberate the minerals from the rock, and then separated and upgraded using various gravity, heavy media, flotation and magnetic processes.

The processing plant will produce approximately 5,000t tungsten concentrate and 1,000t tin concentrate each year  – equivalent to 1 truck a day exported to customers in Europe, USA and Asia.

near Lower Hooksbury Wood

Notice

Wolf Minerals (UK) Limited: application made to abstract water

Published 7 February 2018

This notice was withdrawn on

The consultation period for this application has ended. You can view current licences on the Public Registers.

Lower Hooksbury Wood

Industrial Archaeological Features Industrial activity finds its most striking manifestation in a very fine example of medieval and later tin working. It takes the form of an openwork over one km. long from east to west and up to 250m. wide (L). The worked area has scarped sides up to 6m. deep and it is filled with tinners’ shafts, trial pits, and waste heaps (not depicted in detail on this overlay). The west end of the openwork runs into Lower Hooksbury Wood, where it is not visible on air photographs. It is served by numerous leats running in from north and south and the actual remains of some mining buildings appear to survive in places, particularly at Wheal Florence (M) where the remains of a whim platform can also be recorded. A very unusual alignment of pits (N), presumably derives from mineral prospecting but their date and specific function are unknown.

Fingle to continue their bat survey

Barbastelle bat in Fingle Woods

Going Batty


This week Dr Matt Zeale and Andy Carr from the University of Bristol are returning to Fingle to continue their bat survey. Back in June I was lucky enough to join them for the first of four evenings of detecting and trapping…

Though it was only late afternoon, as we assembled at the Fingle Bridge the moths were out and the midges were beginning to bite which, we were assured, boded well for a successful night. Our evening started with a tour around Fingle so Matt and Andy could familiarise themselves with the woods and identify potential trapping locations. As we drove, Andy explained that to date very little bat surveying has taken place in Fingle (the only exception being a number of emergence surveys on the larch that had to be clear felled because it was infected with phytophthora).

Their excitement at trapping somewhere that hadn’t been trapped before was palpable. Members of the Fingle team were no less eager as understanding what species are present is vital for our restoration and management of the woods. Matt and Andy had therefore been asked to conduct an audit of sorts, using bat detectors and traps to identify what species of bats are present. Although they were keen to stress that the survey isn’t definitive, if we don’t record a particular species it doesn’t mean it isn’t here. But four nights of trapping, two in June and two this week, should provide us with a good picture.

We were on the lookout for locations to site two different styles of trap, mist nets and harp traps. Mist nets are typically made of a fine polyester or nylon mesh suspended between two aluminium poles (so it resembles a volleyball net) and are approximately 6 metres wide. We were therefore looking for a narrow, natural tunnel where the net can span the gap in the vegetation, as bats have a tendency to fly in the middle, equidistant from all vegetation.
Bat caught in a mist net in Fingle Woods
A bat caught in the fine mesh of the mist net

Harp traps are smaller than mist nets, measuring approximately 3m wide and 4m high. We were therefore keeping our eyes peeled for a small window in the vegetation in which to site the device. It comprised a stainless steel frame with dozens of fine filaments stretched from top to bottom. It capitalises on bats’ flight characteristic of turning perpendicular to the ground to pass between obstacles (in this case the traps strings) but as they can’t maintain that angle of flight they drop unharmed into a catch bag below. This bag means harp traps are less labour intensive than mist nets as they only have to be checked every 30 minutes (and don’t carry a risk of entanglement). As the trap is only small they are often used in conjunction with a lure to increase effectiveness. A lure plays bat echolocation and social calls (either synthetic or playback), tricking them into thinking there are other bats in the area. As we were trying to see which species are present our lures were programmed to cycle through a mix of different species calls.
As surveying takes place at sunset, after we had found some suitable locations for the traps we retired to the pub to have some food to sustain us for the long night ahead. Replete, we returned to the woods to set up the traps. As the birdsong drifted away we hoisted the first of the two mist nets into the natural tunnel created by the vegetation overhanging the riverside track. This process required great care as the fine mesh nets can easily become tangled or damaged. In the dappled dusk light the net was virtually invisible, a point reiterated by the fact that we had no sooner put the net up when a bat flew into it (Tom and I were still clinging to the poles as Matt had gone to grab the guy lines). Terribly excited by our instant success we summoned Matt back to discover it was a soprano Pipistrelle. We were suitably impressed that he was able to identify it by its musty smell; an ID confirmed when he checked the markings on its wings. With the sound of a tawny owl in the distance heralding night-fall we hurried to erect the other mist net on the path that leads down from the Hillfort, whilst Andy put up three harp traps.

As soon as the traps were in place excited shouts of “Matt” and “Bat” (often indistinguishable) were ringing through the air from every direction. The mist nets proved productive with five Pipistrelle (including two sopranos of which one was lactating) and a heavily pregnant Barbastelle. The Barbastelle has a distinctive pug-shaped nose and is very rare, with numbers in the UK only thought to be around 5000. This was therefore a very exciting find although we were divided over whether its squashed nose was endearing or ugly! It also yielded my favourite find of the evening, a brown long-eared bat. Long-ears are unmistakable, with (as the name suggests) very long, ram like, ears.
Next we set about checking the catch bags on the harp traps. On first inspection the bag was empty but Andy’s trained eye spotted a bat tucked in the top right hand corner, which was a female Daubenton. As a widespread species mostly found in woodlands which roosts close to water, its appearance wasn’t perhaps surprising.

As we were walking along the river to check on the other two harp traps, we heard a really loud splash and turned to see huge ripples emanating from a spot in the river below us. I suspected it was an otter, a suspicion later confirmed by an unmistakable chirping noise. You could also just make out Daubenton bats skimming the surface of the water, again a sighting confirmed by the fact that the bat detectors in our hands (which divides the frequency of the calls by 8 to make them audible) was busy picking up common Pips and Daubenton’s.

The first harp trap we checked was empty but the second had a bat in it. Andy established that it wasn’t pregnant so he let us put our identification to the test with the help of the FSC (Field Studies Council) guide. The guide was very good and clear until we tried to distinguish between the different Pipistrelle species. However, with Andy’s help we established it was a non-breeding female Soprano.

We returned to find they had found another brown long-eared in the harp trap and a pregnant common Pipistrelle. We all called it a night at midnight leaving Andy and Matt and Tom (our gadget volunteer) to finish the last couple of hours of surveying in peace.

Cornish Tin

Alternative Title: tinstone Cassiterite,

Alternative Title: tinstone


Cassiterite, also called tinstone, heavy, metallic, hard tin dioxide (SnO2) that is the major ore of tin. It is colourless when pure, but brown or black when iron impurities are present. Commercially important quantities occur in placer deposits, but cassiterite also occurs in granite and pegmatites. Early in the 15th century, the cassiterite veins in Saxony and Bohemia were mined for tin; peak production occurred there in the 17th century. In the 18th and much of the 19th centuries, the very large vein deposits of Cornwall were the major source of tin. Today most of the world’s cassiterite is mined in Malaysia, Indonesia, Bolivia, Nigeria, Myanmar (Burma), Thailand, and parts of China; other countries produce smaller amounts. For detailed physical properties, see oxide mineral (table).

Sunday, 22 April 2018

The Teign Gorge