Vermont · MSHA record
Calder
GREENSTONE SLATE COMPANY
- MSHA operator
- GREENSTONE SLATE COMPANY
- Source name
- CALDER
- Quarry / operation
- CALDER
- Location
- Poultney, Vermont
- Color families
- Not listed
- MSHA ID
- 4300801
- Reported status
- Intermittent · since 11/18/2019MSHA snapshot: 18 Sept 2026
- Record type
- Quarry / mining operation
Reported workforce
1 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 definitions Explore Greenstone Slate / Briar Hill QuarryRegister classification
Architectural producer
Curated group: Greenstone Slate / Briar Hill Quarry (Vladyka & Hill)
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.