# Relationship history for MSHA mine 4404733

Current hierarchy: **Ricky L  Owens → Four-O-Mining Company Inc → Mine No 7**

- 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:** Omalene  Deel et al → Mine No 7; 1975-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Presley Branch Coal Company → Mine No 7; 1977-06-01 to 1979-12-16; source msha-controller-operator-history
- **controller_controls_mine:** David C  Hill et al → Mine No 7; 1977-06-01 to 1979-12-16; source msha-controller-operator-history
- **controller_controls_operator:** David C  Hill et al → Presley Branch Coal Company; 1977-06-01 to 1979-12-16; source msha-controller-operator-history
- **operator_operates_mine:** Golden Chip Coal Company Inc → Mine No 7; 1979-12-17 to 1999-02-24; source msha-controller-operator-history
- **controller_controls_operator:** Omalene  Deel et al → Golden Chip Coal Company Inc; 1979-12-17 to 1999-02-24; source msha-controller-operator-history
- **controller_controls_mine:** Ricky L  Owens → Mine No 7; 1982-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Four-O-Mining Company Inc → Mine No 7; 1999-02-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ricky L  Owens → Four-O-Mining Company Inc; 1999-02-25 to current/open; source msha-controller-operator-history