Assertion: titanium vault | /r/HasProperty | covered by a granite capstone
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text: Housed in a teak box, which in turn sits in a titanium vault covered by a granite capstone, the repository consists of 16 porcelain enamel panels that share the story of the carving of Mount Rushmore, about sculptor Borglum, and an answer as to why the four men were chosen to be carved upon the mountain.