# Relationship history for MSHA mine 4607316

Current hierarchy: **Terry L  Matney → P M I 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:** Terry L  Matney → No 1; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Big Hickory Mining Company Inc → No 1; 1987-06-01 to 1989-01-05; source msha-controller-operator-history
- **controller_controls_mine:** Allen G  Stump et al → No 1; 1987-06-01 to 1989-01-05; source msha-controller-operator-history
- **controller_controls_operator:** Allen G  Stump et al → Big Hickory Mining Company Inc; 1987-06-01 to 1989-01-05; source msha-controller-operator-history
- **operator_operates_mine:** P M I Coal Company Inc → No 1; 1989-01-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Terry L  Matney → P M I Coal Company Inc; 1989-01-06 to current/open; source msha-controller-operator-history