# Relationship history for MSHA mine 1516150

Current hierarchy: **Deel Thomas G & Bill → K Y V Coal Company Inc → Mine E-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

- **controller_controls_mine:** Bailey Toby & Teddy Et Al → Mine E-3; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** G & R S Coal Company Inc → Mine E-3; 1987-09-01 to 1988-08-16; source msha-controller-operator-history
- **controller_controls_mine:** Swiney Randy E & George Emitt → Mine E-3; 1987-09-01 to 1988-08-16; source msha-controller-operator-history
- **controller_controls_operator:** Swiney Randy E & George Emitt → G & R S Coal Company Inc; 1987-09-01 to 1988-08-16; source msha-controller-operator-history
- **controller_controls_mine:** Justus William P → Mine E-3; 1988-04-20 to 1990-07-05; source msha-controller-operator-history
- **operator_operates_mine:** Fossil Fuel Inc → Mine E-3; 1988-08-17 to 1989-03-07; source msha-controller-operator-history
- **controller_controls_operator:** Bailey Toby & Teddy Et Al → Fossil Fuel Inc; 1988-08-17 to 1989-03-07; source msha-controller-operator-history
- **controller_controls_mine:** David W  Potter et al → Mine E-3; 1988-11-04 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Potter Mining Company Inc → Mine E-3; 1989-03-08 to 1989-05-17; source msha-controller-operator-history
- **controller_controls_operator:** David W  Potter et al → Potter Mining Company Inc; 1989-03-08 to 1989-05-17; source msha-controller-operator-history
- **controller_controls_operator:** Derek  Potter et al → Potter Mining Company Inc; 1989-03-08 to 1989-05-17; source msha-controller-operator-history
- **operator_operates_mine:** Double J Coal Company Inc → Mine E-3; 1989-05-18 to 1990-07-05; source msha-controller-operator-history
- **controller_controls_operator:** Justus William P → Double J Coal Company Inc; 1989-05-18 to 1990-07-05; source msha-controller-operator-history
- **operator_operates_mine:** K Y V Coal Company Inc → Mine E-3; 1990-07-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Deel Thomas G & Bill → Mine E-3; 1990-07-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Deel Thomas G & Bill → K Y V Coal Company Inc; 1990-07-06 to current/open; source msha-controller-operator-history