# Relationship history for MSHA mine 0600645

Current hierarchy: **Mashantucket Pequot Tribe → Mashantucket Pequot Tribe → GRISWOLD/165 PIT**

- 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:** Mashantucket Pequot Tribe → GRISWOLD/165 PIT; 1995-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mashantucket Pequot Tribe → GRISWOLD/165 PIT; 1995-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mashantucket Pequot Tribe → Mashantucket Pequot Tribe; 1995-05-01 to current/open; source msha-controller-operator-history