2 mines were loading equip. into a loader bucket when a section of the roof fell on them. one was pinned in the loader bucket & the other was able to free himself & drive them both to the surface. Approx. area, fell was 18"" wide, 1' thick, 6'long. Both miners were flown to the medical center, one release the same night, bruises, the other has several broken bones & lacerations.