Abstract: At approximately 10:00 a.m. on April 8, 2010, Employee #1 and a Coworker #1 were attempting to install a new edge blade on the bucket of the excavator and to take off the worn edge blade. Coworker #2, who was operating a long reach excavator, had the boom in a stationary position onto the bolts on the bucket which unexpectedly came down approximately 2 inches and Employee #1 somehow got his right hand caught in-between the blade and the bucket. Employee #2 transported employee #1 to El Centro Regional Medical Center and he was transferred to UCSD Medical Center in San Diego for about 31 hours for surgery and treatment. Equipment and materials used was a CAT 325 D Track Excavator number 2813, Serial Number PGA 20347 with an 8-foot long, 3-foot deep and 3.5-foot wide bucket weighing approximately 1,500 lbs., bolts, two edge blades, bars, cutting edge bolts and a smaller bucket. The employer reported the accident at 3:05 p.m. on April 8, 2010.