Jacob Church , 21 , and Joe Tobin , 29 , were locked inside bank vault . 6mx6m bank vault was one of the rooms on show at a Cardiff art exhibition . Pair only met The first few hours and inadvertently locked door behind them . Had to be rescued by fire crews who drilled through thick concrete walls .
Jacob Church , 21 , and Joe Tobin , 29 , were locked inside bank vault . 6mx6m bank vault was one of the rooms on show at a Cardiff art exhibition . Pair only met earlier in night and inadvertently locked door behind them . Had to be rescued by fire crews who drilled through thick concrete walls .