In 1999, WMF conducted a survey of general conditions around the fortress, which documented masonry spalling, cracking, salt efflorescence, and failing previous repairs, all which were contributing to the deterioration of the fortress walls. Other pressing dangers included water infiltration eroding the structure and pollution from a nearby factory’s sulfur oxide emissions.
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In 1999, WMF conducted a survey of general conditions around the fortress, which documented masonry spalling, cracking, salt efflorescence, and failing previous repairs, all which were contributing to the deterioration of the fortress walls. Other pressing dangers included water infiltration eroding the structure and pollution from a nearby factory’s sulfur oxide emissions.
In 2001, WMF secured support from American Express, the Robert W. Wilson Challenge to Conserve Our Heritage, and the Headley Trust to undertake emergency reinforcement of the underwater foundation and exterior masonry, as well as the erection of barriers to provide the structure with greater protection from water infiltration and improved structural stability. In addition to conservation work, substantial archival research was conducted on the site’s use and development over time. Scholars discovered historic plans and architectural drawings with exceptional value for understanding the original dimensions and shape of the current fortress structure and its changes over time.