The script, written by Robert Holmes, is from a story by John Lucarotti, which was rewritten because it was considered unusable.
It is situated on a steep hillside on land previously considered unusable.
This continued until the Scottish Reformation of 1560 when it was considered unusable.
Shipments of goods from the entire country entered Takhiatash, and according to recollections, were stored poorly, and substantial portions were considered unusable.
The latter was considered unusable in the field, and in the end a tubular magazine was selected for the weapon.
In the back part of the cemetery in a gully, workers have discarded old caskets and urns that are considered unusable.
But rather than impinge on frequencies already used by other broadcasters, the satellite network would use new technology to open up areas of the spectrum previously considered unusable.
As much as 80 percent of a company's knowledge base may reside in documents that might have been considered unusable, industry analysts say.
Philip Condax of Eastman House, the photography museum in Rochester, said modern films were considered unusable three years after the expiration date.
Some point out that there is no standard point at which a paper is considered unusable for library and archival purposes.