In September 1972, the first IBM (system 3) computer was installed at Pleasant Hill.  

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FJ the man and FJ the business
The 'Bunker' or computer room under Pleasant Hill. There are tunnels and rooms that were excavated by staff through the sandstone to provide additional space. Photo: Jones Family Collection
The 'Bunker' or computer room under Pleasant Hill. There are tunnels and rooms that were excavated by staff through the sandstone to provide additional space. Photo: Jones Family Collection
Steps to the 'bunker'. Photo: Tim Carlton
Steps to the 'bunker'. Photo: Tim Carlton