Project 4.1
In 1994, a 1953 "Castle Bravo" program prospectus was found which included reference to Project 4.1 apparently written before the "Bravo" shot had occurred. The U.S. government responded that someone had gone back into the project list after the "Bravo" test to insert Project 4.1; thus, according to the U.S. government, the acts were not premeditated. All other U.S. documents point to Project 4.1 having been established after the "Bravo" test—most sources point to its having been organized on March 7, 1954. The final Project 4.1 report began in its preface with the statement that "Operation CASTLE did not include a biomedical program" (it mentions this in discussing the ad hoc nature by which the project personnel were assembled). All official and mainstream historical accounts of the "Bravo" test indicate that its high level of fallout was a result of a miscalculation in relation to its design and was not deliberate (see the Castle Bravo article for more information on the alleged accident).
Castle of Castelo Branco
A storm caused a landslide that destroyed the eastern/northern corner tower, leading to a formal request to the DGEMN to begin a project of restoration and lookout. Simultaneously, the municipality solicited ideas for the reconstruction of the castle from Engineer Manuel Tavares dos Santos, but lacking any funds, this project was abandoned. By 1975, the possibility of demolishing the wall along "Rua Vaz Preto" was examined: the DGEMN analyzed the walls along this corridor in 1977, in order to determine the viability, while the municipal authority expropriated homes along the segment of the walls.