# Sisecam Wyoming, LLC, Big Island Mine & Refinery (Sweetwater County, WY): MSHA citation under 57.4201(a)(1) (2026-08-19)

**Safety Need Score:** 20/100

| Field | Value |
|---|---|
| Company | Sisecam Wyoming, LLC |
| Mine | Big Island Mine & Refinery (ID 4800154) |
| Location | Sweetwater County, WY |
| Commodity | Trona |
| Mine type | Underground |
| Employees | 437 |
| Issued | 2026-08-19 |
| Action | Citation |
| Standard | 57.4201(a)(1) |
| Significant & substantial | No |
| Negligence | Mod |
| Proposed penalty | $151 |
| Contested | No |

## Why this score


Source: US DOL Mine Safety and Health Administration (MSHA) Open Government Data, company violators only (https://www.msha.gov/data-and-reports/mine-data-retrieval-system?mineId=4800154). Last refreshed: 2026-11-04T01:31:23.849Z.
Data comes from MSHA Open Government Data files, which MSHA updates weekly; citations can appear days to weeks after issue, and proposed penalties are often blank until assessed months later. Citations can be modified, vacated or contested; confirm on the MSHA Mine Data Retrieval System. Company violators only; individual agents are excluded. Not a consumer report and may not be used for FCRA purposes. Informational only; not legal or safety advice.