# Relationship history for MSHA mine 4403732

Current hierarchy: **Masri Fiaq → Heather Coal 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:** M & S Coal Company Inc → No 1; 1975-03-13 to 1980-07-30; source msha-controller-operator-history
- **controller_controls_mine:** Matney Lution → No 1; 1975-03-13 to 1980-07-30; source msha-controller-operator-history
- **controller_controls_operator:** Matney Lution → M & S Coal Company Inc; 1975-03-13 to 1980-07-30; source msha-controller-operator-history
- **controller_controls_mine:** Bailey Arnold → No 1; 1977-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Matney Perry & Donald → No 1; 1978-03-01 to 1981-06-25; source msha-controller-operator-history
- **operator_operates_mine:** P & D Coal Company Inc → No 1; 1980-07-31 to 1981-06-25; source msha-controller-operator-history
- **controller_controls_operator:** Matney Perry & Donald → P & D Coal Company Inc; 1980-07-31 to 1981-06-25; source msha-controller-operator-history
- **controller_controls_mine:** Fuller Richard → No 1; 1980-11-03 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** F & J Coal Corp → No 1; 1981-06-26 to 1982-06-06; source msha-controller-operator-history
- **controller_controls_operator:** Fuller Richard → F & J Coal Corp; 1981-06-26 to 1982-06-06; source msha-controller-operator-history
- **operator_operates_mine:** Top Notch Coal Company Inc → No 1; 1982-06-07 to 1984-01-03; source msha-controller-operator-history
- **controller_controls_operator:** Bailey Arnold → Top Notch Coal Company Inc; 1982-06-07 to 1984-01-03; source msha-controller-operator-history
- **operator_operates_mine:** Heather Coal Inc → No 1; 1984-01-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Masri Fiaq → No 1; 1984-01-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Masri Fiaq → Heather Coal Inc; 1984-01-04 to current/open; source msha-controller-operator-history