OSHA Accident Investigation · Summary #14445480
ASPHYXIATED,WORK RULES,CONSTRUCTION,TRENCH,CRUSHED,SHORING,SLOPING,CAVE-IN
Event description
EMPLOYEE KILLED IN TRENCH CAVE-IN
Investigation abstract
EMPLOYEE #1 WAS WORKING AS A LABORER, HELPING TO INSTALL DRAINAGE PIPE ACROSS A MATERIAL, BY HAND, WHICH HAD BROKEN AWAY FROM THE BOTTOM FOOT AND A HALF OF THE TRENCH WALL. EMPLOYEE #1 WAS REMOVING THIS MATERIAL SO THAT THE PROPER SLOPE COU LD BE OBTAINED FOR THE DRAINAGE PIPE TO BE PLACED. THE TRENCH WALLS BECAME UNDER CUT AND UNSTABLE WHERE THE SILTY MATERIAL FELL OFF. A FRACTURE OCCURRED, CAUSING A PIECE OF MATERIAL, APPROXIMATELY 10 FEET LONG, 2 1/2 FEET WIDE AND 4 1/2 FEET DEEP TO BREAK AWAY FROM THE EAST WALL. THE LARGE PIECE STRUCK EMPLOYEE #1 AND P INNED HIM TO THE WEST WALL. THE MATERIAL COVERED THE EMPLOYEE UP TO ABOUT HIS SH OULDERS. EMPLOYEE #1 DIED FROM ASPHYXIATION BY CRUSHING. HE SUSTAINED A BROKEN C LAVICLE, RIBS, AND OTHER INJURIES ASSOCIATED WITH CRUSHING. DIRT ROAD FROM FIELD TO FIELD. A 66 FOOT LONG TRENCH HAD JUST BEEN DUG ACROSS TH E ROAD, FROM A SOUTHERLY TO NORTHERLY DIRECTION, USING A BACKHOE. TWO 30 FOOT SE CTIONS OF PIPE, COUPLED TOGETHER, WERE TO BE SET INTO THE TRENCH, SLOPING SLIGHT LY TO THE NORTH. THE TRENCH HAD BEEN DUG SO THAT THE WALLS WERE STRAIGHT UP AND DOWN. THERE WAS NO MEANS OF SUPPORT, NOR WAS THERE AN EXIT. EMPLOYEE #1 WAS STAN DING AT THE CENTER LINE OF THE ROAD IN THE MIDDLE OF THE TRENCH. THE TRENCH DEPT H THERE WAS SIX FEET AND THE WIDTH 2 1/2 FEET. THE SOIL WAS SATURATED AND CONSIS TED OF SILTY CLAY AND BLACK DIRT. EMPLOYEE #1 WAS REMOVING CHUNKS OF SILTY CLAY
Victim
-
#1 Fatality Age 21 M
- Nature of injury
- 21
- Part of body
- 5
- Event type
- 14
- Source
- 12
- Occupation code
- 869
- Human factor
- 1
- Environmental factor
- 18
- Hazardous substance
- 8880
- Task assigned
- 1
Codes shown verbatim from OSHA's accident-investigation database. A human-readable decoder is coming in a future release once the accident_lookup2 dictionary is loaded.