Abstract: At approximately 6:49 a.m. on November 13, 2000, Employee #1 broke both legs when he stumbled and fell into a manhole falling fifteen feet. He was removing a wood cover on a 36-inch-diameter newly-constructed manhole. The wood cover, a 4 feet by 4.625 ft inch thick plywood had been placed over the manhole to allow concrete to set prior to installation of the manhole ring. While lifting the piece of plywood, Employee #1 stumbled and fell into the manhole. He fell about fifteen feet and broke both legs. He was removed from the manhole through a pipe lateral and transported to a local trauma center for treatment.