# Relationship history for MSHA mine 1511039

Current hierarchy: **Bailey Dan → Dan Bailey Enterprises Inc → Mine #2**

- 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:** General Energy Corp → Mine #2; 1975-05-01 to 1982-04-29; source msha-controller-operator-history
- **operator_operates_mine:** Bell County Coal Corp → Mine #2; 1978-01-01 to 1982-04-29; source msha-controller-operator-history
- **controller_controls_operator:** General Energy Corp → Bell County Coal Corp; 1978-01-01 to 1982-04-29; source msha-controller-operator-history
- **controller_controls_mine:** Ball Ralph → Mine #2; 1981-06-24 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Bell County Coal Corp → Mine #2; 1982-04-30 to 1985-08-21; source msha-controller-operator-history
- **controller_controls_mine:** Williams Companies Inc → Mine #2; 1982-04-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Williams Companies Inc → Bell County Coal Corp; 1982-04-30 to 1985-08-21; source msha-controller-operator-history
- **operator_operates_mine:** Sterling Energy Inc → Mine #2; 1985-08-22 to 1988-04-05; source msha-controller-operator-history
- **controller_controls_operator:** Ball Ralph → Sterling Energy Inc; 1985-08-22 to 1988-04-05; source msha-controller-operator-history
- **controller_controls_mine:** Bailey Dan → Mine #2; 1987-07-27 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Dan Bailey Enterprises Inc → Mine #2; 1988-04-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bailey Dan → Dan Bailey Enterprises Inc; 1988-04-06 to current/open; source msha-controller-operator-history