# Relationship history for MSHA mine 1510186

Current hierarchy: **Ovington Robert C → C & O Coal Company Inc → No 1 Tipple**

- 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:** Magic Valley Coal Company Inc → No 1 Tipple; 1976-12-01 to 1981-08-25; source msha-controller-operator-history
- **controller_controls_mine:** Price Seldom W → No 1 Tipple; 1976-12-01 to 1986-06-04; source msha-controller-operator-history
- **controller_controls_operator:** Price Seldom W → Magic Valley Coal Company Inc; 1976-12-01 to 1981-08-25; source msha-controller-operator-history
- **operator_operates_mine:** Kentucky Black Beauty Coal Corp → No 1 Tipple; 1981-08-26 to 1985-03-07; source msha-controller-operator-history
- **controller_controls_mine:** Wombles James R → No 1 Tipple; 1981-08-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wombles James R → Kentucky Black Beauty Coal Corp; 1981-08-26 to 1985-03-07; source msha-controller-operator-history
- **operator_operates_mine:** Summitt Ridge Coal Sales Inc → No 1 Tipple; 1985-03-08 to 1985-05-16; source msha-controller-operator-history
- **controller_controls_mine:** Wilder Doug → No 1 Tipple; 1985-03-08 to 1985-05-16; source msha-controller-operator-history
- **controller_controls_operator:** Wilder Doug → Summitt Ridge Coal Sales Inc; 1985-03-08 to 1985-05-16; source msha-controller-operator-history
- **operator_operates_mine:** Magic Valley Coal Company Inc → No 1 Tipple; 1985-05-17 to 1986-06-04; source msha-controller-operator-history
- **controller_controls_operator:** Price Seldom W → Magic Valley Coal Company Inc; 1985-05-17 to 1986-06-04; source msha-controller-operator-history
- **operator_operates_mine:** Wise-Company Mining Inc → No 1 Tipple; 1986-06-05 to 1987-08-30; source msha-controller-operator-history
- **controller_controls_mine:** Coleman Vonda Joan → No 1 Tipple; 1986-06-05 to 1987-08-30; source msha-controller-operator-history
- **controller_controls_operator:** Coleman Vonda Joan → Wise-Company Mining Inc; 1986-06-05 to 1987-08-30; source msha-controller-operator-history
- **operator_operates_mine:** Irick Coal Company Inc → No 1 Tipple; 1987-08-31 to 1989-01-02; source msha-controller-operator-history
- **controller_controls_mine:** Bowling Sonja → No 1 Tipple; 1987-08-31 to 1989-01-02; source msha-controller-operator-history
- **controller_controls_operator:** Bowling Sonja → Irick Coal Company Inc; 1987-08-31 to 1989-01-02; source msha-controller-operator-history
- **operator_operates_mine:** C & O Coal Company Inc → No 1 Tipple; 1989-01-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ovington Robert C → No 1 Tipple; 1989-01-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ovington Robert C → C & O Coal Company Inc; 1989-01-03 to current/open; source msha-controller-operator-history