# Relationship history for MSHA mine 4606584

Current hierarchy: **Hatfield Richard & J Charles Lockhart → R C R Coal Company → Mine No 6**

- 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:** Jennings Adkins Excavating Contractors Inc → Mine No 6; 1982-08-01 to 1982-10-04; source msha-controller-operator-history
- **controller_controls_mine:** Adkins Jennings → Mine No 6; 1982-08-01 to 1982-10-04; source msha-controller-operator-history
- **controller_controls_operator:** Adkins Jennings → Jennings Adkins Excavating Contractors Inc; 1982-08-01 to 1982-10-04; source msha-controller-operator-history
- **operator_operates_mine:** R C R Coal Company → Mine No 6; 1982-10-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hatfield Richard & J Charles Lockhart Et Al → Mine No 6; 1982-10-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hatfield Richard & J Charles Lockhart Et Al → R C R Coal Company; 1982-10-05 to current/open; source msha-controller-operator-history