# Relationship history for MSHA mine 1507319

Current hierarchy: **Jimmy E  Hamilton → Titan Tipple Company → Preparation Plant**

- 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:** Giles Coal Company → Preparation Plant; 1974-01-01 to 1977-05-09; source msha-controller-operator-history
- **controller_controls_mine:** Giles R O → Preparation Plant; 1974-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Giles R O → Giles Coal Company; 1974-01-01 to 1977-05-09; source msha-controller-operator-history
- **operator_operates_mine:** Titan Tipple Company → Preparation Plant; 1977-05-10 to 1986-10-23; source msha-controller-operator-history
- **controller_controls_mine:** Templeton William → Preparation Plant; 1977-05-10 to 1986-10-23; source msha-controller-operator-history
- **controller_controls_operator:** Templeton William → Titan Tipple Company; 1977-05-10 to 1986-10-23; source msha-controller-operator-history
- **operator_operates_mine:** Titan Tipple Company → Preparation Plant; 1986-10-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jimmy E  Hamilton et al → Preparation Plant; 1986-10-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jimmy E  Hamilton et al → Titan Tipple Company; 1986-10-24 to current/open; source msha-controller-operator-history