# Relationship history for MSHA mine 4405888

Current hierarchy: **Keen Larry R → Jamie Marcus Coal Company Inc → #3**

- 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:** R A P Coal Company Inc → #3; 1982-05-01 to 1989-02-27; source msha-controller-operator-history
- **controller_controls_mine:** Jackson Raymond → #3; 1982-05-01 to 1989-02-27; source msha-controller-operator-history
- **controller_controls_operator:** Jackson Raymond → R A P Coal Company Inc; 1982-05-01 to 1989-02-27; source msha-controller-operator-history
- **controller_controls_mine:** Keen Larry R → #3; 1988-07-26 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Jamie Marcus Coal Company Inc → #3; 1989-02-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Keen Larry R → Jamie Marcus Coal Company Inc; 1989-02-28 to current/open; source msha-controller-operator-history