Oklahoma · MSHA record
#1 Quarry
Rock Island Stone Company LLC
- MSHA operator
- Rock Island Stone Company LLC
- Quarry / operation
- #1 Quarry
- Location
- Blocker, Oklahoma
- Color families
- Not listed
- MSHA ID
- 3401099
- Reported status
- Active · since 04/20/1992MSHA snapshot: 18 Sept 2026
- Record type
- Quarry / mining operation
Reported workforce
5 workers in this MSHA record
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 definitionsRegister classification
Review - likely veneer/flagstone
A research classification, separate from MSHA operating status.
Confirm before specifying
Open MSHA source datasetAsk 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 Sept 2026. Company names identify operators, not verified parent-company ownership.