Slag inclusions in iron objects and the quest for provenance: an experiment and a case study

Slag inclusions are found within most archaeological bloomery iron artefacts and are remainders of slag created during the smelting and smithing processes. Although they are widely believed to provide data with the potential for provenancing iron artefacts, previous slag inclusion studies have mostly proven inconclusive. The main aim of the work reported here is to analyse experimental smelting and smithing assemblages (including ore, furnace lining, fuel and slag), to compare these to slag inclusions in the resulting bloom and worked objects, and then explore the relationships between ore, slag and slag inclusions. This study has revealed that the composition of slag inclusions most closely relates to the smelting slag produced, whereas provenance to a specific ore would be difficult due to the chemical variability derived from furnace lining, fuel and any fluxes used. Some compounds in the slag inclusions are particularly affected during smithing of the artefact, i.e. those present in the sand flux and fuel used. However, trends are observed in the K₂O/MgO, MnO/SiO₂, Al₂O₃/SiO₂, Al₂O₃/MgO, Al₂O₃/K₂O and Al₂O₃/CaO ratios that allow comparison between slag inclusions and smelting slag in these experiments, and may therefore be used during other provenancing attempts. The knowledge gained from the experimental assemblages was subsequently applied to an archaeological case study, examining objects from the 900 Cal BC smithing site of Tel Beth-Shemesh, Israel and the 930 Cal BC smelting site of Tell Hammeh, Jordan. The analyses suggest that none of the artefacts examined derived from the Hammeh smelting system.     

Official Statistics and the Contemporary Politics of Indigeneity

Critical scholarship on colonisation tells us that official statistics have reflected the perspectives of the colonisers. However, the colonised, in asserting ‘Indigenous rights,’ have begun to use official statistics to advocate policies that will relieve the continuing structural injustice that is colonisation's legacy. This paper examines Aboriginal and Maori intellectuals' efforts to quantify, using official statistics, the ‘unfinished business’ of settler colonial liberalism. Examining Aboriginal and Torres Strait Islander Social Justice Commissioners' annual Reports, the paper argues that their quantitative comparisons of Indigenous and non-Indigenous populations highlighted the contested implications of ‘equality.’ Turning to New Zealand, the paper reviews two issues: the appropriate boundary of the ‘Māori population,’ and whether it is possible to measure Māori well-being according to Māori norms. The paper draws on the work of Andrew Sharp to make sense of the difficulties and opportunities that face Indigenous intellectuals in Australia and New Zealand when they operationalise ‘social justice’ in the terms of a comparative statistical archive. The paper argues that there are now two distinct idioms in which to represent the collective Indigenous presence within settler colonial nation-state—one signified by the concept ‘population,’ the other by the concept ‘people.’ The tensions between ‘population’ and ‘people,’ resonating with undecided issues about the claims of Indigenous citizenship upon a liberal policy, are a feature of contemporary Indigenous political discourse.     

Rethinking Aboriginal ‘Resistance’: The Community Development Employment (CEPD) Program

In this paper I wish to contribute to an understanding of ‘Aboriginal resistance’ by a study of the politics of remote Aborigines' ‘employment’. I begin by highlighting some themes in recent discussions of the Community Development Employment Projects (cdep ) policy, before looking back at some features of the welfare and pastoral economy in the Central Australian hinterland, c. 1950 to c. 1975. My aim is twofold: to show some of the cultural continuities in the relationships between remote Aborigines and government; and to criticise constructively the notion of ‘Aboriginal resistance’, to advocate a structural and processual notion of ‘resistance’ and to move away from one based on the clear identification of actors.     

向二氯化碳宣战——化学奇案：失踪的碳元素

一切都显示在荧幕上,森林正在呼吸。美国马萨诸塞州某处林地中,夏末的阳光穿透翠绿的林冠洒落下来。哈佛大学的大气科学家史蒂芬．沃夫西用各种仪器正监测着这片森林的生命机能。鲜红的数字在计量仪上闪动,这些读数显示出小屋附近树顶处的二氧化碳浓度。这些数字比全球平均值低了10ppm（百万分之一）：大约是360ppm,这都是这些树的功劳。沐浴在阳光下的树木吸入二氧化碳,将之转变成叶子和木材。在吸收养分的同时,这片长有松树、栎树和槭树的树林同时也将人类引起的全球性巨变抵消了一小部分。     

After Structure Planning: The New Sub-regional Planning in England

The reformed planning system introduced in England in 2004 weakens the position of counties and unitary authorities. Regional bodies and central government have a larger say on the future shape of localities under these arrangements. In particular sub-regional strategies have a much bigger role within the new Regional Spatial Strategies. This paper examines the prospects for the influence of this new tier of planning, based on government guidance about sub-regional planning and on the evidence on emerging practice, particularly in the southern regions of England. The balance of influence of different actors is changing, both between government tiers and in wider governance relations. The prospects for integrated action in spatial terms are changing, as are the relationships to implementation.     

Investigating archaeological site formation processes on the battleship USS Arizona using finite element analysis

Scientists from the National Institute of Standards and Technology (NIST) worked in a collaborative partnership with archaeologists from the National Park Service's (NPS) Submerged Resources Center (SRC) to develop a finite element model (FEM) of the battleship USS Arizona. An FEM is a computer-based engineering model that calculates theoretical stresses, propagation of force, and shape changes to a structure under loads using thousands or even millions of individual elements whose individual responses are well understood. NIST researchers created an FEM of an 80 ft. (25 m) midships section of the Arizona site to analyze archaeological site formation processes on the sunken battleship, in particular to determine the current condition of the wreck and predict its future strength and structural integrity as it continues to corrode. The NIST's FEM study is one aspect of a larger project under the direction of the NPS, the USS Arizona Preservation Project, whose goal is to determine the nature and rate of corrosion affecting USS Arizona, and to model its long-term structural deterioration. The FEM incorporates findings from other key components of the USS Arizona Preservation Project, such as steel hull corrosion rates, structural surveys of the vessel, sediment compaction studies, and analysis of the concretion that covers the ship's hull, into a single tool that is being used to predict how the wreck will degrade in the future.