See other failures under 000.html.
Steel fork failure. From http://cozybeehive.blogspot.com/2009/03/steel-fork-failure.html as of 2010/03.
Fatigue failure on a steel fork used regularly for 30 years.
Service history unknown.
A 30 year service life is more than reasonable, but the failure could have been avoided if the lug tapered gradually rather than sharply.
See also FAIL-134.html