On 5 August 2010, all 33 of the day shift miners at the San Jose mine in Chile were missing and feared killed when their copper and gold mine collapsed. For 17 days no one knew whether they were alive or dead. Miraculously, after all hope was lost, on the 17th day the specialist drilling rigs looking for signs of life smashed through into the tunnel where the men had been clinging on. All 33 of the men were alive and well.