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Figure 9. Fort Brockhurst Bridge – fully conserved and rebuilt were built around the columns in order to pump out the water to be able to treat the parts that would normally be submerged. Condition and Treatment ~ ss Great Britain The ship had undergone several major refits during her working life so by 1970 she was very different in appearance to the ship that had been originally launched. The individuals who brought the ship back to England were fortunate however, in that the ship had been photographed immediately after her launch in 1843 by Fox Talbot, a pioneer of modern photography. The original Trustees relied on Talbot’s photograph to make the ship look as she had in 1843. Consequently a considerable amount of material was removed from the ship, including masts, decks, timber cladding to the upper hull and a propeller lifting mechanism fitted in 1857. She was given replica masts, rigging, decks, funnel, rudder, propeller and a significant amount of internal interpretation. Several large corroded areas of the hull were cut away and replaced with mild steel. By the late 1990s it became clear that the ship was unstable. Conditions within the lower hull were extremely corrosive and movement between the keel and the keel blocks indicated that the hull, the dock or both were moving. The Trustees decided with the support of the Heritage Lottery Fund, to undertake a review of the significance and condition of the ship and this resulted in the publication of a full Conservation Plan and condition report for the Dockyard and the ship. [1] [2] This allowed the Trustees to resolve that in future the ship would be treated as a museum object and that all actions relating to the ship and surrounding dockyard would be conservation-led. The conservation plan also considered the advantages and disadvantages of a large number of options for preserving the ship’s metal. Analysis 209
Figure 10 Fox Talbot’s 1843 photograph of the options showed that control of the relative humidity (RH) around the original iron was likely to be the most effective way of conserving the maximum amount of original material. What was less clear was the level of RH required and the optimum physical arrangements for providing the controlled environment. Eventually, after considering all possible options it was decided to recommend the installation of a glass plate at the level of the ship’s waterline. The glass plate would seal between the hull and the walls of the dry dock, allowing environmental Figure 11 Scuttled in Sparrow Cove 210 Figure 12. The ss Great Britain mid 1990s control of the iron below the waterline. Iron surfaces within the ship were environmentally controlled by sealing corrosion holes, installing air locks on doors, and sealing a new mild-steel deck to the bulwarks of the ship. This left only the topsides (the external area of the hull above the waterline) to be treated. It was decided that these areas should be treated conventionally. There were several factors that lead to this decision. It was hard to envisage any form of encapsulation other than a complete building that would be more aesthetically pleasing than the waterline plate. Although tests had shown the presence of large quantities of chlorides in the iron, they were significantly fewer in the iron of the topsides, perhaps because the iron had been washed with Bristol rain for 30 years. Furthermore, significant areas of the topsides had been replaced with mild steel or glass re-inforced plastics in the 1970s and 1980s. So although the majority of the ship had not responded well to a cleaning and re-painting regime since 1970 it was believed that with careful use of conventional treatment, and careful maintenance, the topsides could be effectively conserved. A ‘hierarchy of intervention’ was agreed between the conservator and the curator. All material dating from before1970 was designated as’ precious’ and could not be cut, drilled, or welded without their agreement. All treatments were to be reversible. (In the event, only two forms of non reversible treatment proved to be necessary. One was the use of abrasive cleaning to some parts of the topsides and the other was the removal of a small part of a deck hatch to permit the fitting of a lift to ensure complete access to all parts
Page 1 and 2:
Preserving the evidence of industri
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Copyright: This publication is issu
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Table of contents Foreword ........
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Contributions KeynotespeaKers
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”The control and disciplination o
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uildings of this age. To sum up: Th
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need tons of cans to fully understa
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one of the first to be industrializ
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manufacture of billiard balls. Hyat
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have very similar characteristics;
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MACHINERIES were introduced, but al
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16) Goodman N., Langages de l’art
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Table 1. Collections containing pla
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Figure 2: A pile of transparent cel
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diisocyanate such as diphenylmethan
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Figure 7: Environmental Stress Crac
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Author Yvonne Shashoua Senior Resea
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Contributions
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Figure 1. H.A. Brendekilde, Odense
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weaving, the imported machine spun
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Figure 2. T. Kloss. Den danske eska
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Annemette B. Scharff, MSc. The Roya
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22. Eckersberg diaries, 29.7.1834:
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The St Just Coast Project 1995 - 20
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Prior to the St Just Coast Project
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shaft. Considering the considerable
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In 2005 the slipway at Cape Cornwal
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Figure 1: The EWO dosimeter holder
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Figure 2: EWO results reporting dia
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Figure 3: Correlation of EWO respon
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The EWO is available on direct orde
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Figure 2. Nature is back at coking
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3a 3b 3c 3d 3e 70 Figure 3a-e Being
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Table 2. Case studies location Hatt
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Flameproofed textiles in museums an
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y strong acidity created as an effe
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textile fibres, especially those of
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Cold storage as an alternative to m
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% of objects 100 90 80 70 60 50 40
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% of very brittle objects (3 hand f
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lie in the range of 20-25 euros per
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Preservation of sponsored films Int
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In the case of A & B rolls the diff
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Table 2. Advantages and disadvantag
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Table 3 “The preservation route
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The scientific committee considered
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DSCF 1304 Preservation of mass-prod
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Developing a policy and procedure f
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at the (very) occasional public ope
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• the object’s current conditio
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Polymers in watches manufactured in
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as a result of the Watch Valley con
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Figure 6. The Astrolon Watch “Ide
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of status of the watch is obvious i
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[26] Bergeon, S. Ethique et conserv
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Gramophones and Records - the first
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Record manufacturing process 1925-1
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Gramophones The reproducing machine
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Pickups (and cutterheads) are very
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USS Monitor conservation: preservin
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Figure 1: X-radiograph mosaic of US
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Figure 4: Detail of ventilation uni
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Figure 8: Detail of Monitor’s pac
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Authors Eric Nordgren, David Krop,
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Figure 2. The Ducretet inductor coi
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During its time in storage at the N
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Figure 8. Wigmore Castle after cons
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[14]Henderson, J. And P. Manti (200
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The instability of iron when subjec
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Fig. 2 Rust stains on the too-thinl
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Fig. 4 Some bicycles in use and in
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5. Conservation options: Preserving
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Another look at painted finishes on
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the currency of the finishes. The w
Page 160 and 161: Figure 3 WW2 airplane with newly-pa
Page 162 and 163: paint chips that are simulated with
Page 164 and 165: Notes: 1. There are a few notable e
Page 166 and 167: Industrially produced paint and the
Page 168 and 169: twentieth century. In the same peri
Page 170 and 171: table 1. cont. Styrenebutadiene or
Page 172 and 173: Figure 3. “A useful play!” is t
Page 174 and 175: Author Nynne Raunsgaard Sethia Den
Page 176 and 177: Protection of iron and steel in ind
Page 178 and 179: provided by the manufacturers indic
Page 180 and 181: Table 2: Suppliers for selected pro
Page 182 and 183: Table 3: Application, appearance an
Page 184 and 185: Figure 5: Impedance versus frequenc
Page 186: 3. Hollner, S., Mirambet, F., Rocca
Page 189 and 190: The choice of coating system depend
Page 191 and 192: Figure 4. Dockside crane No.16 Orth
Page 194 and 195: Recovering the Icon ? The restorati
Page 196 and 197: Fig 3: Early 20th century photograp
Page 198 and 199: Fig 8: New mercury-vapor rectifiers
Page 200 and 201: problematic since the colliery clos
Page 202 and 203: Despite all our rational attempts a
Page 204 and 205: Author Dipl.-Ing. Norbert Tempel, L
Page 206 and 207: The conservation of a Victorian shi
Page 208 and 209: sold to the Falkland Islanders and
Page 212 and 213: Figure 13 Artist’s impression of
Page 214 and 215: Figure 21 View from bow after the w
Page 216: [3] Transactions of the Institute o
Page 219 and 220: 38 in total, included on the Norweg
Page 221 and 222: published a new version of their fi
Page 223 and 224: Figure 4. The turbines, one origina
Page 225 and 226: Author Vigdis Vingelsgaard Conserva
Page 227 and 228: Figure 2: 6200 locomotive on front
Page 229 and 230: Figure 4: Methyl bromide extinguish
Page 231 and 232: 2. Biological: Obvious biological h
Page 234: Finalizing Comments
Page 237 and 238: colliery engine house to have stain
Page 239 and 240: for us to think that the treatment
Page 241 and 242: certain product may quickly turn in
Page 244: Organising committee anDersen, vivi
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