# Relationship history for MSHA mine 4404248

Current hierarchy: **Richard  Drum → Manna Coal Corp → No 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Harris Frank → No 1 Mine; 1972-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Harper Valley Coal Company Inc → No 1 Mine; 1975-01-01 to 1979-09-05; source msha-controller-operator-history
- **controller_controls_operator:** Harris Frank → Harper Valley Coal Company Inc; 1975-01-01 to 1979-09-05; source msha-controller-operator-history
- **operator_operates_mine:** R & H Coal Company Inc → No 1 Mine; 1979-09-06 to 1993-04-03; source msha-controller-operator-history
- **controller_controls_mine:** Glen W  Hubbard → No 1 Mine; 1979-09-06 to 1993-04-03; source msha-controller-operator-history
- **controller_controls_operator:** Glen W  Hubbard → R & H Coal Company Inc; 1979-09-06 to 1993-04-03; source msha-controller-operator-history
- **operator_operates_mine:** R & H Coal Company Inc → No 1 Mine; 1993-04-04 to 1997-10-13; source msha-controller-operator-history
- **controller_controls_mine:** Larry  Long → No 1 Mine; 1993-04-04 to 1997-10-13; source msha-controller-operator-history
- **controller_controls_operator:** Larry  Long → R & H Coal Company Inc; 1993-04-04 to 1997-10-13; source msha-controller-operator-history
- **controller_controls_mine:** Carl A  Hamilton et al → No 1 Mine; 1996-08-26 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lone Wolf Coal Company Inc → No 1 Mine; 1997-10-14 to 1998-04-29; source msha-controller-operator-history
- **controller_controls_operator:** Carl A  Hamilton et al → Lone Wolf Coal Company Inc; 1997-10-14 to 1998-04-29; source msha-controller-operator-history
- **controller_controls_operator:** Stephen D  Halsey et al → Lone Wolf Coal Company Inc; 1997-10-14 to 1998-04-29; source msha-controller-operator-history
- **operator_operates_mine:** Manna Coal Corp → No 1 Mine; 1998-04-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Richard  Drum → No 1 Mine; 1998-04-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard  Drum → Manna Coal Corp; 1998-04-30 to current/open; source msha-controller-operator-history