Researchers at Los Alamos National Laboratory's biggest magnet facility recently produced magnetic fields in excess of 100 tesla while conducting six different experiments. The hundred-tesla level is roughly equivalent to 2 million times Earth's magnetic field.
The team used the 100-tesla pulsed, multi-shot magnet, a combination of seven coils sets weighing nearly 18,000 pounds and powered by a massive 1,200-megajoule motor generator. There are higher magnetic fields produced elsewhere, but the magnets that create such fields blow themselves to bits in the process. The system at Los Alamos is instead designed to work nondestructively, in the intense 100-tesla realm, on a regular basis.
To read more about the work see: http://www.lanl.gov/news/releases/magnetic_field_researchers_target_hundred_tesla_goal.html
To see the video go to: http://www.lanl.gov/news/stories/magnet-lab-video.html