The Daily Mail has a posted some photos from the Whitechapel Bell Foundry in London's East End, the oldest manufacturing firm in Britain.
Molten bell metal – a bronze alloy of 22 per cent tin, 78 per cent copper – is poured into a mould at the Whitechapel Bell Foundry in
Big Ben, the iconic clock tower in London, struck its bell for the first time on this day in 1859.
The first bell cracked under testing two years before the tower was built and its replacement only lasted two months before it also cracked.
For the following four years Big Ben remained