Qa'dah 03, 1431, Oct 11 (SPA) - Chile's 33 trapped miners and their relatives were counting down the hours on Monday as rescuers worked to finish reinforcing an escape shaft to avoid a last minute disaster as their two month ordeal draws to an end, Reuters reported. Engineers expect to finish lining part of the narrow, nearly 2,050 foot-long (625-metre) shaft with metal tubes early on Monday. Then they will do test runs with special escape capsules, and the government aims to start hoisting the men to freedom one by one on Wednesday. They are installing the tubes to head off the risk of rocks from the side of the drill shaft falling down onto the capsules dubbed "Phoenix" after the mythical bird, and blocking them from reaching the surface. Mining Minister Laurence Golborne said on Sunday rescuers could start lifting the miners to the surface on Tuesday evening if all went well, as one of the world's most complex rescue operations and most stunning survival stories nears its climax. President Sebastian Pinera, who has ordered a revamp of mine safety regulations in the wake of the accident, has said he plans to visit the mine on Tuesday. One of the 33 miners is a Bolivian national, and Bolivia's President Evo Morales has vowed to visit the mine for his rescue. Rescue officials said they would push ahead boring a separate shaft with a rig usually used to drill for oil as a back-up plan, just in case there are any complications. They have halted a third drill.