 In 1956 the Home Office issued a specification for a vastly expanded network of bunkers with space for 300 staff, capable of resisting a near miss, linked into communications systems such as the BBC, and capable of operating for several months.However, in the following year Britain was hit by one of the recurrent economic crises which marked the 1950s and 1960s, and the plans had to be scaled back.In particular, the new RSGs were, wherever possible, to use existing facilities, with none in the end being purpose-built.