In the four years following the cessation of hostilities with the Manticoran Alliance, Bolthole's scientists succeeded in developing LAC carriers, modern-standard light attack crafts and pod-laying superdreadnoughts, among other systems.
Despite their best efforts, the intelligence services of the Manticoran Alliance were unable to discover its exact location until the end of the Second Havenite-Manticoran War. (HH11) It was located in a system on the far side of the Haven Sector with a population of hundreds of millions. (infodump)
- David Weber's comment on the origin of Bolthole in the Infodump