# Relationship history for MSHA mine 1509533

Current hierarchy: **Martin Harry A → T T & M 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Hall George C & Palmer → No 1; 1975-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Carl  Kirk et al → No 1; 1975-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hall & Hall Coal Company → No 1; 1976-03-01 to 1977-04-18; source msha-controller-operator-history
- **controller_controls_operator:** Hall George C & Palmer → Hall & Hall Coal Company; 1976-03-01 to 1977-04-18; source msha-controller-operator-history
- **operator_operates_mine:** Amber Coal Company Inc → No 1; 1977-04-19 to 1981-01-05; source msha-controller-operator-history
- **controller_controls_operator:** Carl  Kirk et al → Amber Coal Company Inc; 1977-04-19 to 1981-01-05; source msha-controller-operator-history
- **operator_operates_mine:** Melana Coal Company Inc → No 1; 1981-01-06 to 1982-09-06; source msha-controller-operator-history
- **controller_controls_mine:** Wade Clarence Et Al → No 1; 1981-01-06 to 1982-09-06; source msha-controller-operator-history
- **controller_controls_operator:** Wade Clarence Et Al → Melana Coal Company Inc; 1981-01-06 to 1982-09-06; source msha-controller-operator-history
- **operator_operates_mine:** Stanton Coal Company Inc → No 1; 1982-09-07 to 1983-11-12; source msha-controller-operator-history
- **controller_controls_mine:** Neece Stanley → No 1; 1982-09-07 to 1983-11-12; source msha-controller-operator-history
- **controller_controls_operator:** Neece Stanley → Stanton Coal Company Inc; 1982-09-07 to 1983-11-12; source msha-controller-operator-history
- **operator_operates_mine:** Misty K Mining Company Inc → No 1; 1983-11-13 to 1994-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Isaac Conard → No 1; 1983-11-13 to 1994-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Isaac Conard → Misty K Mining Company Inc; 1983-11-13 to 1994-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Martin Harry A → No 1; 1987-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Stone Coal Mining Inc → No 1; 1994-07-01 to 1995-06-01; source msha-controller-operator-history
- **controller_controls_mine:** Smith David F → No 1; 1994-07-01 to 1995-06-01; source msha-controller-operator-history
- **controller_controls_operator:** Smith David F → Stone Coal Mining Inc; 1994-07-01 to 1995-06-01; source msha-controller-operator-history
- **operator_operates_mine:** T T & M Inc → No 1; 1995-06-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Martin Harry A → T T & M Inc; 1995-06-02 to current/open; source msha-controller-operator-history