Wiktionary
buriable
a. Able to be, or designed to be buried.
Usage examples of "buriable".
Those were the ones that could get you a great story, either on TV or on the front pages, and those were mostly buriable, as it were, only because so many projects that were done in the light of day were so awesomely wasteful that nobody had to work to dig out the really secret flops.