OSHA Accident Investigation · Summary #969519
EXTERRA DIVISION OF DAVE'S DRILLING CO.
SALT LAKE CITY, UT·
Event description
Three employees exposed to cyanide and methane gas
Investigation abstract
Several employees were using a Porta TKT RT 1800 workover type drilling rig to d rill for cyanide and methane gas in the vicinity of Monterey Park, California. W hen they were drilling the last of seven holes on the property, gas in concentra tions of up to 110 ppm escaped into the work area. Employees #1, #2, and #3 were exposed to the escaped gas, treated at a hospital, and released.
Victims (3)
-
#1 Hospitalized Age 33 M
- Nature of injury
- 2
- Part of body
- 29
- Event type
- 12
- Source
- 19
- Occupation code
- 614
- Human factor
- 6
- Environmental factor
- 7
- Hazardous substance
- 0790
- Task assigned
- 1
-
#2 Hospitalized Age 26 M
- Nature of injury
- 2
- Part of body
- 29
- Event type
- 12
- Source
- 19
- Occupation code
- 614
- Human factor
- 6
- Environmental factor
- 7
- Hazardous substance
- 0790
- Task assigned
- 1
-
#3 Hospitalized Age 33 M
- Nature of injury
- 2
- Part of body
- 29
- Event type
- 12
- Source
- 19
- Occupation code
- 614
- Human factor
- 6
- Environmental factor
- 7
- Hazardous substance
- 0790
- Task assigned
- 1
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