# Relationship history for MSHA mine 4606536

Current hierarchy: **Cline Clayton → Boggs & Murphy Mining Company → Mine No 2**

- 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:** Boggs & Murphy Mining Company → Mine No 2; 1982-06-01 to 1984-10-31; source msha-controller-operator-history
- **controller_controls_mine:** Murphy Coleman Jr → Mine No 2; 1982-06-01 to 1984-10-31; source msha-controller-operator-history
- **controller_controls_operator:** Murphy Coleman Jr → Boggs & Murphy Mining Company; 1982-06-01 to 1984-10-31; source msha-controller-operator-history
- **operator_operates_mine:** Boggs & Murphy Mining Company → Mine No 2; 1984-11-01 to 1985-03-21; source msha-controller-operator-history
- **controller_controls_mine:** Hager Charley → Mine No 2; 1984-11-01 to 1985-03-21; source msha-controller-operator-history
- **controller_controls_operator:** Hager Charley → Boggs & Murphy Mining Company; 1984-11-01 to 1985-03-21; source msha-controller-operator-history
- **operator_operates_mine:** Boggs & Murphy Mining Company → Mine No 2; 1985-03-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cline Clayton → Mine No 2; 1985-03-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cline Clayton → Boggs & Murphy Mining Company; 1985-03-22 to current/open; source msha-controller-operator-history