# Relationship history for MSHA mine 3605622

Current hierarchy: **Noel Robert T → Robert T Noel Coal Inc → Glasgow Strip**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Francis J  Hamilton et al → Glasgow Strip; 1974-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Fran Contracting Inc → Glasgow Strip; 1975-06-01 to 1980-08-14; source msha-controller-operator-history
- **controller_controls_operator:** Francis J  Hamilton et al → Fran Contracting Inc; 1975-06-01 to 1980-08-14; source msha-controller-operator-history
- **controller_controls_operator:** Ronald W  Hamilton et al → Fran Contracting Inc; 1975-06-01 to 1980-08-14; source msha-controller-operator-history
- **controller_controls_mine:** Noel Robert T → Glasgow Strip; 1980-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Robert T Noel Coal Inc → Glasgow Strip; 1980-08-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Noel Robert T → Robert T Noel Coal Inc; 1980-08-15 to current/open; source msha-controller-operator-history