. >> so it's now my pleasure to introduce kit ooh knick kitty nicholson, who was the manager of the magna carta preservation process and she'll tell us a little bit about the process. thanks, kitty. >> thank you very much. the document conservation lab of the national archives was really honored and pleased to be asked to be involved in ensuring the long-term preservation of the 1297 rubinstein magna carta. in taking on this project, we were building on the expertise that we acquired in the recent treatment and encasement of the charters of freedom and being able to apply it to the preservation of another great charter from an earlier era in english history. the project had separate lines of work that came together flawlessly. one was the conservation examination and treatment of this great document, another was the design and fabrication of this really remarkable state of the art encasement that would be filled with inert gas, and the third was the fabric and design of the exhibit case to hold all this and protect it. as i've said, all those strands have come together in just the last we