# Relationship history for MSHA mine 4606546

Current hierarchy: **Mapel Carl R → Mapel Energy Inc → 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Camp Branch Coal Company Inc → No 1; 1982-06-01 to 1983-07-24; source msha-controller-operator-history
- **controller_controls_mine:** Mullins Leontia → No 1; 1982-06-01 to 1983-09-27; source msha-controller-operator-history
- **controller_controls_operator:** Mullins Leontia → Camp Branch Coal Company Inc; 1982-06-01 to 1983-07-24; source msha-controller-operator-history
- **operator_operates_mine:** Master Mining Inc → No 1; 1983-07-25 to 1984-03-15; source msha-controller-operator-history
- **controller_controls_mine:** Hatfield Richard & J Charles Lockhart Et Al → No 1; 1983-07-25 to 1984-03-15; source msha-controller-operator-history
- **controller_controls_operator:** Hatfield Richard & J Charles Lockhart Et Al → Master Mining Inc; 1983-07-25 to 1984-03-15; source msha-controller-operator-history
- **operator_operates_mine:** Neibert Coal Company Inc → No 1; 1984-03-16 to 1985-08-25; source msha-controller-operator-history
- **controller_controls_mine:** Browning Ted R → No 1; 1984-03-16 to 1985-08-25; source msha-controller-operator-history
- **controller_controls_operator:** Browning Ted R → Neibert Coal Company Inc; 1984-03-16 to 1985-08-25; source msha-controller-operator-history
- **operator_operates_mine:** Zola Mining Inc → No 1; 1985-08-26 to 1986-05-04; source msha-controller-operator-history
- **controller_controls_mine:** Gilliam Charles Jr → No 1; 1985-08-26 to 1986-05-04; source msha-controller-operator-history
- **controller_controls_operator:** Gilliam Charles Jr → Zola Mining Inc; 1985-08-26 to 1986-05-04; source msha-controller-operator-history
- **operator_operates_mine:** Mapel Energy Inc → No 1; 1986-05-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mapel Carl R → No 1; 1986-05-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mapel Carl R → Mapel Energy Inc; 1986-05-05 to current/open; source msha-controller-operator-history