Safety concerns within the mint were raised when fire broke out in July 1532.Sanudo, Diari, 57 (1902), col. 516, 7 July 1532 Following an inspection by Doge Andrea Gritti () to verify conditions, the Council of Ten, the magistracy responsible for the defence of vital state interests, deliberated on 4 December 1535 that the entire mint was to be rebuilt with stone vaults in order to eliminate the use of wooden beams.Howard, Jacopo Sansovino..., p. 39.Morresi, Jacopo Sansovino, p. 182 This decision coincided with a need to add furnaces and increase production following a deliberation of the Council of Ten in 1526 that obligated the government offices dislocated in the subject cities on the mainland to accept only Venetian currency, effectively substituting local currencies for official business. In addition, it was necessary to improve security when after 1528 interest-earning private deposits began to be accepted at the mint as a means of increasing the supply of silver for minting.Morresi, Jacopo Sansovino, p. 182
