# Relationship history for MSHA mine 1510034

Current hierarchy: **Blair Rodney → E & R Coal Company 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

- **controller_controls_mine:** Mullins Estill → No 1; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Three J Coal Company Inc → No 1; 1976-10-01 to 1977-05-23; source msha-controller-operator-history
- **controller_controls_mine:** Justice Palmer → No 1; 1976-10-01 to 1977-05-23; source msha-controller-operator-history
- **controller_controls_operator:** Justice Palmer → Three J Coal Company Inc; 1976-10-01 to 1977-05-23; source msha-controller-operator-history
- **operator_operates_mine:** 4-M Coal Company Inc → No 1; 1977-05-24 to 1978-01-28; source msha-controller-operator-history
- **controller_controls_mine:** Moore Raymond → No 1; 1977-05-24 to 1978-01-28; source msha-controller-operator-history
- **controller_controls_operator:** Moore Raymond → 4-M Coal Company Inc; 1977-05-24 to 1978-01-28; source msha-controller-operator-history
- **operator_operates_mine:** Amco Mining Company → No 1; 1978-01-29 to 1978-07-17; source msha-controller-operator-history
- **controller_controls_mine:** Davidson Michael & James Lowe → No 1; 1978-01-29 to 1978-07-17; source msha-controller-operator-history
- **controller_controls_operator:** Davidson Michael & James Lowe → Amco Mining Company; 1978-01-29 to 1978-07-17; source msha-controller-operator-history
- **operator_operates_mine:** Little & Mullins Coal Company Inc → No 1; 1978-07-18 to 1979-02-28; source msha-controller-operator-history
- **controller_controls_operator:** Mullins Estill → Little & Mullins Coal Company Inc; 1978-07-18 to 1979-02-28; source msha-controller-operator-history
- **operator_operates_mine:** E & R Coal Company Inc → No 1; 1979-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Blair Rodney → No 1; 1979-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Blair Rodney → E & R Coal Company Inc; 1979-03-01 to current/open; source msha-controller-operator-history