VSF 2010 Report - Nabo

Appendix 3: Slag counts and weights by context
The total counts and weights for each context are provided in the tables below, before
describing the discussing the archaeometallurgical residues for each context.
COUNTS 204... 318 319 324 332 6020 6057 6069 6073 6074 6096 6103 6126 7012 Oth. Total
Undiagnostic 968 501 1009 1168 65 314 - 63 - 851 127 5066
Flowed 315 122 576 339 16 20 1234 93 123 6 160 591 4 3599
Tap 8 27 4 1 1 2 43
Smelting 98 15 390 164 7 130 9 1 16 96 2 928
SHB 5 13 1 6 1 3 29
Hammerscale 2 195 3 16 16 232
Fuel ash 12 1 24 5 6 48
Technical vitrif. 5 1 32 12 1 16 8 1 17 93
Ferr. conc. 28 22 147 31 19 8 174 6 4 6 65 16 526
Charcoal 1 1 2
Other 3 3 1 7
Total 1439 662 2218 1723 109 31 1762 1 437 1 164 72 183 1621 150 10573
WEIGHT (g) 204... 318 319 324 332 6020 6057 6069 6073 6074 6096 6103 6126 7012 Oth. Total
Undiagnostic 4784.5 1351.0 14170.5 6527.7 463.23 629.1 55981.6 246.05 1108.9 3000.1 449.5 1223.2 1152.8 808.33 91896.3
Flowed 3164.1 919.3 8145.1 2150.7 364.19 47.0 4403.3 557.1 675.7 35.6 448.5 1167.6 69.5 22147.7
Tap 1010.3 1822.5 86.4 133.74 325.1 46.7 3424.7
Smelting 4273.8 343.7 13150.0 2698.7 278.45 3042.3 189.8 550.4 321.4 2515.5 47.94 27412.1
SHB 203.8 1037.5 274.3 1193.0 57.0 275.3 3040.9
Hammerscale 146.2 2.5 38.6 5.3 0.45 0.7 52.3 21.6 3.7 3.6 16.8 291.6
Fuel ash 45.5 12.9 149.4 28.0 34.9 270.7
Technical vitrif. 130.4 2.5 1668.2 237.6 21.05 205.4 61.6 4.3 45.9 2376.9
Ferr. conc. 335.9 337.0 1327.4 254.9 83.6 5.1 1189.9 32.8 52.2 21.8 366.5 112.61 4119.8
Charcoal 0.6 0.2 0.2 0.1 1.1
Other 91.1 2.1 472.0 39.6 404.0 672.2 0.4 1.5 80.0 1653.7 3416.6
Total 14185.7 2971.4 41981.2 12029.2 1344.7 1360.2 66775.0 571.1 2029.2 550.4 4375.0 486.6 1701.3 5345.2 2692.1 158398.4
2005 Excavation season
In 2005, 88 iron finds were recovered from Areas 1 and 2. Roughly half of the ferrous objects
were identified as nails, as well as fragments from other small objects. A large proportion of
these metallic finds comprise three apparent concentrations; aeolian silt and turf deposit [200]
(18th-20th centuries), midden deposit [209=287] (late 10th century) and the organic/charcoal
spread [288=241]. Colleen Batey has suggested that the iron finds, in conjunction with the
slag and charcoal rich deposits, are evidence for the recycling of iron objects (2005: 77-79).
These finds were not studied during this assessment.
[204=251=302]
Context [204=251=302] is described as an extensive homogenous aeolian silt deposit (5-
10cm thick) covering Area 2 (Milek 2005: 51). A large concentration of slag was recovered
from layer [204=251=302], in the region north of Structure 3. It is thought that the slag, like
other material recovered from the layer, had worked up from layers underneath context
[204=251=302]. The deposit corresponds to finds 31, 97 and 100. Within this deposit, small
140