# Relationship history for MSHA mine 4603217

Current hierarchy: **Furr Danny H → Gilmer Energies Inc → Jon Tee #1 Mine**

- 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:** Gilmer Fuel Company → Jon Tee #1 Mine; 1950-01-01 to 1979-10-18; source msha-controller-operator-history
- **controller_controls_mine:** Darnell R A → Jon Tee #1 Mine; 1950-01-01 to 1979-10-18; source msha-controller-operator-history
- **controller_controls_operator:** Darnell R A → Gilmer Fuel Company; 1950-01-01 to 1979-10-18; source msha-controller-operator-history
- **operator_operates_mine:** Jon Tee Mining Company → Jon Tee #1 Mine; 1979-10-19 to 1981-12-21; source msha-controller-operator-history
- **controller_controls_mine:** Harrold Don → Jon Tee #1 Mine; 1979-10-19 to 1981-12-21; source msha-controller-operator-history
- **controller_controls_operator:** Harrold Don → Jon Tee Mining Company; 1979-10-19 to 1981-12-21; source msha-controller-operator-history
- **operator_operates_mine:** Gilmer Energies Inc → Jon Tee #1 Mine; 1981-12-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Furr Danny H → Jon Tee #1 Mine; 1981-12-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Furr Danny H → Gilmer Energies Inc; 1981-12-22 to current/open; source msha-controller-operator-history