Abstract: On September 17, 1998, several employees were retrieving and repairing a chain in a pit that contained water and inedible catfish parts. Employee #1 was exiting the pit when he fell back into the pit. Employee #2 was holding Employee #1's head to keep it above the material in the pit when he collapsed. Employee #3 and Employee #4 attempted to enter the pit, but were unable to do so. Both Employees #3 and #4 collapsed outside of the pit. Employee #5 attempted to enter the pit, but was unable to do so, and collapsed outside the pit. Employee #6 entered the pit and collapsed inside the pit. Employee #6 was rescued by Employee #7. Employee #1 was asphyxiated by hydrogen sulfide gas and died. Employees #2, #6 and #7 were admitted to the hospital. Employees #3, #4 and #5 were not hospitalized. The inspection indicated that permit-required confined space procedures were not followed; an entry permit was not completed, atmospheric testing not performed, retrieval equipment was not available, and personal protective equipment was not utilized.