# Relationship history for MSHA mine 4607729

Current hierarchy: **Parsley Ronald → R M I Contracting Corp → No 4**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Shell Oil Company → No 4; 1987-09-12 to 1992-11-23; source msha-controller-operator-history
- **controller_controls_mine:** Goff Mauriene → No 4; 1989-05-30 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Western Mingo Coal Company → No 4; 1989-07-01 to 1991-03-19; source msha-controller-operator-history
- **controller_controls_operator:** Shell Oil Company → Western Mingo Coal Company; 1989-07-01 to 1991-03-19; source msha-controller-operator-history
- **operator_operates_mine:** Radec Inc → No 4; 1991-03-20 to 1994-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Goff Mauriene → Radec Inc; 1991-03-20 to 1994-09-30; source msha-controller-operator-history
- **controller_controls_mine:** Parsley Ronald Et Al → No 4; 1994-04-19 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** R M I Contracting Corp → No 4; 1994-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Parsley Ronald Et Al → R M I Contracting Corp; 1994-10-01 to current/open; source msha-controller-operator-history