# Relationship history for MSHA mine 4606429

Current hierarchy: **Webb Raymond R → Oceana Coal Company Inc → No 1**

- 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:** Jeffery Patricia → No 1; 1980-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Little-J Coal Company Inc → No 1; 1981-10-01 to 1984-04-05; source msha-controller-operator-history
- **controller_controls_operator:** Jeffery Patricia → Little-J Coal Company Inc; 1981-10-01 to 1984-04-05; source msha-controller-operator-history
- **operator_operates_mine:** Oceana Coal Company Inc → No 1; 1984-04-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Webb Raymond R → No 1; 1984-04-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Webb Raymond R → Oceana Coal Company Inc; 1984-04-06 to current/open; source msha-controller-operator-history