Chile has brought forward the attempt to begin bringing 33 trapped miners to the surface. Officials say the operation will now begin at 4.30 AM Indian Standard Time tomorrow four hours earlier than previously announced. Engineers said, a test of the steel rescue capsule was earlier carried out successfully, descending almost the whole way down a 622 metre shaft. The men were trapped in the San Jose mine by a tunnel collapse on 5 August. Reports say there is a sense of excitement on the surface, with the miners' families counting the hours. Journalists have flocked to the mine from all over the world to see the freed men emerge from their two-month ordeal. Wives and girlfriends are camped out at the site entrance. President Sebastian Pinera is due to arrive at the mine later today and security has been tightened.