A Sod Lime Kiln on Cefn Bryn,Gower, West Glamorgan

Abstract

The surviving half of a winged glass furnace was excavated at Savenel, south of Louvain (Belgium). Coins, glass and pottery suggested operation early in the 17th century, and archives confirm the presence in the locality of the Colnets, a family of glass makers at that time. The furnace is paralleled by excavated examples in England.     

A Sixteenth-Century Wealden Blast Furnace: A Report on Excavations at Panningridge,Sussex, 1964-1970

Abstract

The excavation recovered evidence for two periods of iron smelting; there were substantial surviving structures from a blast furnace thought from documentary sources to have produced pig-iron from 1542 until at least 1563 and, superimposed, indications of a later furnace built with major changes in layout at some time after 1563 but abandoned well before 1611. It was possible to compare, in particular, the application of water-power in the two periods and to sample ore and cast iron. The features of the first furnace could be related to references in surviving account books, and thus a yardstick may be offered for future fieldwork on undocumented furnaces of the period.     

Charcoal analysis of industrial fuelwood from medieval and early modern iron-working sites in Bilsdale and Rievaulx,North Yorkshire,UK: evidence for species selection and woodland management

Abstract

This paper presents the results of species diversity and dendrological analyses of archaeological charcoal excavated from medieval and early modern iron production sites in Bilsdale, and at Rievaulx in the neighbouring valley of Ryedale, North Yorkshire, UK. Standard methods of quantification are used to assess species diversity, sampling sufficiency and taxa presence. The assessment of dendrological features provides additional evidence for growth trends and cutting cycles analogous with cyclical woodland management, as well as environmental and growing conditions. Analysis of archaeological charcoal from four medieval bloomery furnace sites in Bilsdale, and from the site of the hammersmithy and blast furnace at the early modern iron works at Rievaulx, provide comparable data-sets which indicate a change in cutting practise and dominant species selection for industrial fuelwood occurred between the 12th- and mid-16th centuries AD. Results show that dominant species presence changed from an admixture of predominantly birch (Betula sp.) and hazel (Corylus avellana) sourced from small calibre branchwood and stemwood used in the medieval bloomery furnaces, to a dominant oak (Quercus sp.) presence from standard sources used at the Rievaulx iron works by the mid-16th century. Whilst it is uncertain whether this change in dominant species composition and the source of industrial fuelwood is related to changes in local availability, or the result of the technological transition to blast furnace processing which occurred at this time, estate records reveal a woodland management campaign was instigated to supply and maintain fuelwood supplies to the iron works at Rievaulx which coincides with the introduction of Tudor arboricultural legislation in the 1540s.     

How the Romans got themselves into hot water: temperatures and fuel types used in firing a hypocaust

Abstract

The remains of hypocausts are noted as being widespread throughout the Roman Empire but, whereas the structure of hypocaust systems has been widely documented, primary knowledge of operating temperatures is limited. The petrographic technique of reflectance microscopy is used here to quantify cell wall reflectance values for charcoals from the hypocaust furnace of a bath suite forming part of small Romano-British villa complex at Groundwell Ridge near Swindon (Wiltshire, UK). The technique utilises material of archaeological origin to infer operating temperatures of the hypocaust furnace using established calibrations. The charcoals recovered from the furnace were identified as being predominantly Quercus (Oak) with some Populus/Salix (poplar/willow). Mean random reflectance of the samples indicated furnace-operating temperatures of 330–410°C. These temperatures fall below that of charcoal fuel production and hence suggest that it was wood that was used to fuel the hypocaust at Groundwell Ridge and not charcoal. Knowledge of the operating temperature of the furnace is a starting point in further calculations to understand, using primary evidence, the operating temperatures throughout the hypocaust system.     

Post-Medieval Britain in 1966

Abstract

Fieldwork and excavation between 1967 and 1971 disclosed the sites of two glass furnaces in valleys running southwards from the North Yorkshire Moors. At Hutton Common (SE 706883) a vessel-producing furnace was excavated, revealing three main phases of operation, the last of which had a magnetic date late in the 16th century. There was also fragmentary evidence for an auxiliary furnace, perhaps used for annealing. In the Rosedale valley (SE/745932) another complex was excavated; this included a winged melting furnace similar to the Hutton example and also producing vessel glass, and at least two auxiliary furnaces. The dating evidence for this melting furnace was similar, and pottery in and near an adjacent ruined cottage showed that this had been occupied about 1600. There was no documentation directly relating to these sites apart from a glassmaker referred to in the Lastingham parish register for 1593.     

Excavations at Rockley Smithies,a water-powered bloomery of the 16th and 17th Centuries

Abstract

Between about 1500 and 1640 iron was smelted by the direct, bloomery, process on the lands of the Rockley family at (N.G.R.) SE/340023, to the south-west of Barnsley, Yorkshire, using charcoal and ore from the well-wooded outcrops of the Tankersley ironstone, adjacent to the site. Evidence for operation early in the 16th century was limited to accumulations of hearth-cinder and of debris from ore-roasting, minor structures and traces of a dam. About 1600 a major rebuilding involved the construction of a bloom-hearth and probably two stringhearths, with bellows powered by waterwheels, and an unpowered hammer. Minor rebuilding took place early in the 17th century, and archaeological and documentary evidence combine to place abandonment at about 1640. Demolition and stone-robbing could well have provided material for the blast-furnace built a short distance away in 1652. The bloomery site was abandoned to pasture and perhaps a cottage, and at some time early in the 19th century was occupied by two houses and a workshop for an adjacent colliery tramway. It was covered by a road embankment in 1966.

Evidence was found of techniques at a comparatively advanced bloomery, in operation at a time when English ironmasters were, however, increasingly favouring the use of the blast furnace.     

Halse Maltings,Somerset

Abstract

In the summer of 1986 The Conservation Section of Taunton Deane Borough Council asked the Somerset Industrial Archaeological Society for advice on a malthouse at Halse which was the subject of a planning application for conversion into two dwellings. The site was surveyed in November 1986, and research into its history revealed an elderly farm worker who could remember it in use and some of the characters associated with it. The archaeology and history of the site are described.     

Archaeological Investigations at Swalwell Ironworks,Tyne and Wear

Abstract

A programme of archaeological investigations was undertaken at Sands Road, Swalwell in Gateshead to examine part of the Swalwell Ironworks founded by Ambrose Crowley in 1707, ahead of the redevelopment of the site as a supermarket. The well-preserved sub-surface remains of buildings dating from the earliest phase of the ironworks were revealed including the eastern part of the Grand Warehouse, constructed by 1713, which was divided into two parts by an undercover keel dock, with the eastern portion functioning as a wharf building for keels to load and unload goods. The combined archaeological, documentary and cartographic evidence demonstrated that this building had been used until the latter part of the 20th century and had been subject to a series of modifi cations throughout the life of the ironworks and during subsequent activity at the site. Also revealed was a forge building, parts of which dated back to the earliest phase of the ironworks, although this building had evidently been subject to many phases of alteration, repair and rebuilding. Within the forge was a chimney dated to the second half of the 19th century by stamped fi rebricks. Archaeometallurgical analysis of slags from within the chimney suggested that this was from a puddling furnace. Comprehensive historical research was also undertaken and this revealed a very rich documentary and cartographic archive, which generally corresponded very well with the archaeological remains.     

Albion Mill,Manchester

Abstract

Albion Mill, demolished in 1983, was a good example of a 'fireproof' Manchester cotton textile mill of the second decade of the nineteenth century. Its demolition enabled a detailed record to be made of its features and the account which follows is based upon that survey. The full documentation is deposited with RCHME at Fortress House, London W1X 2BT.     

GLASS RECIPES AND THE OUTPUT FROM A 19TH-CENTURY GLASS WORKS: EXAMPLES FROM PERCIVAL,VICKERS & CO. LTD,MANCHESTER

Abstract

Excavations by Oxford Archaeology North in 2003 revealed extensive structural remains of the former Percival, Vickers and Co. Ltd glass works, one of the principal 19th-century glass manufactories in Manchester. A detailed account of the excavated remains, focusing on the significant developments in furnace design inherent in the exposed structures, has already been published in volume 29.1 (2007) of the Review. However, an in-depth analysis of the 187kg of glass fragments recovered from the excavation was omitted, and this shortcoming is addressed in the present paper. Scientific analysis of the glass compositions revealed that a variety of recipes were used, and these related closely to the different ways that glass was being worked on site, as evidenced by the various types of waste. A relatively small but nevertheless significant number of vessel fragments were also recovered, allowing the output of the glass works to be characterised for the first time.     

The Kitchen Area of Northolt Manor,Middlesex

Abstract

The Winchester Moot Horn was found in a chest in the late 19th century when the Westgate was cleared out in advance of its conversion to a museum. Although generally believed to be of late-12th- or early-13th-century date on stylistic grounds, and a civic horn appears in local documentary sources, its excellent state of preservation has always raised some doubt as to its antiquity. Recent study and scientific analyses have now confirmed its early date. A survey of other moot horns from England suggests that at least one other, from Canterbury, dates to much the same time.     

A survey of the charcoal-fuelled ironworking industries of Carmarthenshire and Pembrokeshire

Abstract

A project carried out in 2001 recorded the most important surviving remains of charcoal-fuelled blast furnaces and forges in Carmarthenshire and Pembrokeshire, and reviewed the documentary evidence relating to them. The earliest sites date to the end of the 16th and the early 17th century. The furnaces at Ponthenri (Carmarthenshire) and Blackpool (Pembrokeshire) and the forges at Llandyfan (Carmarthenshire) were surveyed. One furnace site (either Ponthenri or Pontiets) may retain below-ground evidence for experiments in coke smelting by Hugh Grundy in 1620, giving it considerable national importance. These monuments are little known; attention is drawn to their steadily deteriorating condition.     

The Medieval Village at Garrow Tor,Bodmin Moor,Cornwall

SUMMARY

The site chosen for excavation in the medieval village at Garrow proved to be a platform-house, a variant of the long-house, a widespread form of peasant dwelling. Both types provided for the shelter of man and his beasts under one roof; in its early form, as here, it consisted of a living-room and byre separated by a passage connecting with an entrance in each long side. The platform-house was suited to meet the hard conditions of life in a hilly country of heavy rainfall. It was built on an oblong platform constructed with its long axis at right angles to the contours of the hillside. Thus the house gained considerable protection from wind and rain.

Two outstanding features were the hearth with fireback centrally placed on the floor in the upper room and the manger which was in situ in the byre. Near the house was a small barn. The two buildings stood in a small enclosure. Pottery found in the house and barn and in the fields connected with the settlement showed that there was occupation from the thirteenth to the fifteenth centuries. Inhabited farmhouses of this type can still be seen in Cornwall.¹     

The Earth's Soil Our Ultimate,Shrinking Limit to Growth

Abstract

The loss of productive soil in the world was first brought to the attention of the international community at the Environment Conference in Stockholm, 1972. Subsequent discussions have led to the suggestion that the slow rate of transfer to the developing world of the technology for its control was perhaps due to social and economic rather than to technological constraints. The background to this hypothesis and the attempt that is being made to validate it, are here described.     

On the Horn-shaped Head-Dresses of the 13th, 14th,and 15th Centuries

Abstract

The excavation of the only Cistercian abbey firmly established on the Isle of Man produced clear evidence of its church plan, its various modifications and its modest architectural pretensions. The burials contained some grave goods and displayed early methods of burial. An unexpected feature was a chapel attached to the east end of the north transept north chapel.     

Proceedings of the Twenty-ninth Annual Meeting,Wolverhampton, 1872

Abstract

This paper takes as its starting point the relatively unusual form taken by Lincoln's gatehouse-cum-guildhall, which was rebuilt in 1520. It is argued that the Stonebow's elevation bears a superficial similarity to the contemporary royal palace at the Field of the Cloth of Gold. The local political background may suggest that the two buildings are, indeed, connected — through the city council's efforts to renegotiate the terms of their fee-farm with their feudal lords. The new building, and its simple Annunciation iconography, were intended to be understood at several levels of symbolic meaning, all of which referred to the city's relationship with its various lords. Consequently, the Stonebow's simplicity is deceptive; it is, in fact, a multi-faceted political statement, summing up the city's own view of its place in contemporary politics and, as such, it is a good example of the complexity sometimes achieved in early Renaissance architectural iconography.     

Apprentices,Goldsmiths, and the North in Sixteenth- and Seventeenth-Century England

Abstract

The story of King Edgar being rowed on the River Dee at Chester in 973 by eight subordinate kings was once well known. This article examines how it was used in popular history writing from the eighteenth century onwards, with greatest development in the mid nineteenth century, and subsequent decline into its present obscurity. It served English political and cultural ends, being used to demonstrate the natural superiority of that race over the others in the Union, particularly the Scots. Decline of imperial sentiment and ignorance of pre-Conquest history have relegated it to incidental mention in county histories.     

The Excavation of Clydach Ironworks

Abstract

The Clydach Ironworks began production around the turn of the nineteenth century, supplying a Forge and Rolling Mill in the same valley with pig iron until the 1870s, when through a lack of funds, the concern passed into the hands of an Abergavenny solicitor. This is a report based on the archaeological work undertaken at the Ironworks from 1986-1988 and represents the author's term as Site Archaeologist. It argues that the blast for Furnaces 1 and 2 was supplied by two waterwheels and that Furnace 3 is in fact the fourth furnace to have been constructed, partially overlying the site of one wheel pit. This pit would have belonged to the 42 foot wheel adjacent to Furnace 2 which is illustrated on an 1813 engraving.     

THE MELTING FURNACE OF THE DERRIÈRE SAIROCHE GLASSWORKS (COURT,SWISS JURA): HEAT‐INDUCED MINERALOGICAL TRANSFORMATIONS AND THEIR TECHNOLOGICAL SIGNIFICANCE*

Seventy‐one oriented specimens from the pre‐industrial reverberatory melting furnace of the Derrière Sairoche glassworks (Swiss Jura) were analysed. During its period of activity (1699–1714), this glassworks produced wood‐ash glass of liquidus temperatures up to 1400°C. Textural and mineralogical features point to temperatures around 1500°C in the melting chamber. The inner structure of the furnace shows chemical contamination due to ash, molten glass and furnace gases. These results reveal the pyrotechnological know‐how of the glassmakers and prove that the thermal performance of this kind of furnace has been under‐evaluated in the past.