# Relationship history for MSHA mine 1512296

Current hierarchy: **James L  Griffith → D & A Coal Company Inc → No 6 4 (D)**

- 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:** Clevinger Grover Jr Et Al → No 6 4 (D); 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James L  Griffith et al → No 6 4 (D); 1970-01-11 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** D & V Coal Company Inc → No 6 4 (D); 1980-04-01 to 1981-06-17; source msha-controller-operator-history
- **controller_controls_mine:** Danny D Mead → No 6 4 (D); 1980-04-01 to 1981-06-17; source msha-controller-operator-history
- **controller_controls_operator:** Danny D Mead → D & V Coal Company Inc; 1980-04-01 to 1981-06-17; source msha-controller-operator-history
- **operator_operates_mine:** Prospect Coal Company → No 6 4 (D); 1981-06-18 to 1981-12-03; source msha-controller-operator-history
- **controller_controls_operator:** Clevinger Grover Jr Et Al → Prospect Coal Company; 1981-06-18 to 1981-12-03; source msha-controller-operator-history
- **operator_operates_mine:** D & A Coal Company Inc → No 6 4 (D); 1981-12-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James L  Griffith et al → D & A Coal Company Inc; 1981-12-04 to current/open; source msha-controller-operator-history