Arizona · MSHA record
Mayer Onyx
Stoneworld Co.
- MSHA operator
- Stoneworld Co.
- Quarry / operation
- Mayer Onyx
- Location
- Mayer, Arizona
- Color families
- Brown, Red, White, Green, Black, Gray, Gold
- MSHA ID
- 0202987
- Reported status
MSHA: Active · Mine ID 0202987
MSHA record details
Mayer Onyx
Snapshot: 18 September 2026. Mine source record 0202987 · Look up this ID at MSHA · Status effective 21 April 2021Regulatory classification; confirm current supply separately.
Mine source record- Record type
- Quarry / mining operation
Reported workforce
Not reported
MSHA’s NO_EMPLOYEES field comes from the Mine Information Form. The snapshot is dated 18 Sept 2026; it does not give this field a reporting-period date. These are mine-record figures, not current company headcounts or proof of production.
MSHA field definitionsRelated material listings
Grand Canyon OnyxBlack Canyon OnyxConfirm before specifying
Look up this mine ID at MSHAAsk the supplier about current availability, material range, fabrication and test data for your application. A listing or MSHA status does not establish supply readiness.
MSHA snapshot dated 18 September 2026. Company names identify operators, not verified parent-company ownership.