# Relationship history for MSHA mine 4300497

Current hierarchy: **James J  Amery → Smeggars Slate Company → LLOYD QUARRY NO 1.**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Smeggars Slate Company → LLOYD QUARRY NO 1.; 1996-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James J  Amery → LLOYD QUARRY NO 1.; 1996-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James J  Amery → Smeggars Slate Company; 1996-03-01 to current/open; source msha-controller-operator-history