# Relationship history for MSHA mine 1509763

Current hierarchy: **Bartley Michael → J B & S Enterprises Inc → Lucky Lady**

- 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:** Conroy  Coleman  et al → Lucky Lady; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bailey Henry S → Lucky Lady; 1974-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Henry B Coal Company Inc → Lucky Lady; 1976-06-18 to 1977-01-25; source msha-controller-operator-history
- **controller_controls_operator:** Bailey Henry S → Henry B Coal Company Inc; 1976-06-18 to 1977-01-25; source msha-controller-operator-history
- **operator_operates_mine:** Coleman & Runyon Coal Company → Lucky Lady; 1977-01-26 to 1988-09-08; source msha-controller-operator-history
- **controller_controls_operator:** Conroy  Coleman  et al → Coleman & Runyon Coal Company; 1977-01-26 to 1988-09-08; source msha-controller-operator-history
- **controller_controls_mine:** Coleman Roy Darrell → Lucky Lady; 1986-12-15 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Tabcol Mining Inc → Lucky Lady; 1988-09-09 to 1990-07-18; source msha-controller-operator-history
- **controller_controls_operator:** Coleman Roy Darrell → Tabcol Mining Inc; 1988-09-09 to 1990-07-18; source msha-controller-operator-history
- **operator_operates_mine:** B & M Coal Company → Lucky Lady; 1990-07-19 to 1992-09-14; source msha-controller-operator-history
- **controller_controls_mine:** Bartley Marvin → Lucky Lady; 1990-07-19 to 1992-09-14; source msha-controller-operator-history
- **controller_controls_operator:** Bartley Marvin → B & M Coal Company; 1990-07-19 to 1992-09-14; source msha-controller-operator-history
- **operator_operates_mine:** J B & S Enterprises Inc → Lucky Lady; 1992-09-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bartley Michael → Lucky Lady; 1992-09-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bartley Michael → J B & S Enterprises Inc; 1992-09-15 to current/open; source msha-controller-operator-history