An associate had a run in with a framing nailer the other day...

Contributory factors include fatigue, knot, doubled, and subsequent split
that sent the 10d nail out the side of the framing lumber and into the meat
of the thumb/palm. Meat only... missed the bones and tendons.

Note that my negative scanner is not big enough to scan a 13"x18" x-ray so I
had to merge multiple scans in Photoshop... only the second time I tried
this so don't be too critical. ;~)

John