# POISONING (TOXIC MATERIALS)
> MSHA accident `220230930010` · 03/21/2023 · Freeport-McMoRan Sierrita Ops.
## Details
- **Degree of injury:** OCCUPATNAL ILLNESS NOT DEG 1-6
- **Classification:** POISONING (TOXIC MATERIALS)
- **Accident type:** Inhalation of radiations, caustics, toxic and noxious substances
- **Occupation:** Miner, Prospector, NEC
- **Activity:** Machine maintenance
- **Injury source:** NOXIOUS MINE GASES,NEC
- **Nature of injury:** POISONING,SYSTEMIC
- **Body part:** BODY SYSTEMS
- **Days lost:** 12
- **Mine experience:** 6.04 years
## Operator
- **Controller:** Freeport-McMoRan Inc
- **Operator:** Freeport-McMoRan Sierrita Ops.
- **Mine:** [0200144](https://api.ai-analytics.org/mine/0200144)
## Narrative

Control room operator tasked with switching scrubbers. Field operator was asked to close the crossover gate/valve on the wrong roaster by control room operator. During process it caused SO2 gas to vent thru #1 roaster building. EE attempted to remove themselves from area. Was overwhelmed with gas in building. Transferred to Hospital, kept overnight. 

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*Source: [MSHA Open Government Data](https://arlweb.msha.gov/OpenGovernmentData/) · AI Analytics · CC0 1.0*