OSHA Accident Investigation · Summary #14483952
ASPHYXIATED,LIFELINE,WORK RULES,FLOWING MATERIAL,LACERATION,UNSTABLE SURFACE,BRIDGED MATERIAL,BURIED,CONTUSION
Event description
One killed, one injured when buried in stone bin
Investigation abstract
A supervisor at a concrete ready-mix plant assigned Employees #1 and #2 to deter per gates were open and the conveyor belt was running (350 fpm). When Employees #1 and #2 succeeded in loosening the stone, it gave way beneath them. They were quickly drawn down into the flowing material. Employee #1 was buried entirely an d Employee #2 was buried up to his chin. It took about 1 1/2 hours of digging wi th hand shovels to free both employees. Employee #1 died of asphyxia. Employee # 2 was hospitalized for multiple bruises, contusions, and lacerations. mine why stone was not running from the holding bin. Upon examination they found that the bin contained approximately 75 tons of #4 ASTM stone and decided that it was probably frozen. The two employees entered a tunnel below the bins that c ontained the hoppers and conveyor. They tried unsuccessfully to loosen the stone by banging on the side of the hopper with a sledgehammer. They then went to the front of the bin, Employee #1 with the sledgehammer and Employee #2 with a 4 in . by 4 in. by 3/8 in. angle iron and a 10 ft long pry bar. They entered the bin and climbed on top of the stone, directly over the grate-covered hopper. The hop
Victims (2)
-
#1 Fatality Age 25 M
- Nature of injury
- 2
- Part of body
- 28
- Event type
- 2
- Source
- 12
- Occupation code
- 999
- Human factor
- 1
- Environmental factor
- 8
- Task assigned
- 1
-
#2 Hospitalized Age 26 M
- Nature of injury
- 3
- Part of body
- 19
- Event type
- 2
- Source
- 12
- Occupation code
- 999
- Human factor
- 1
- Environmental factor
- 8
- Task assigned
- 1
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