At 5:15 p.m. on October 27, 2013, three (3) employees and a supervisor were working on the deck of three (3) barges to ready them for delivery.
The supervisor and one of the employees entered the #1 cargo tank of barges #1 and #2 to check the deep well blind on the deep well inspection flange.
Another coworker, assisted by Employee #1, also entered the #1 cargo tank.
Employee #1, 59, became dizzy and could not climb the ladder to get out, and fell to the tank bottom, landing on his right side and striking his head on the metal tank.