# Relationship history for MSHA mine 1515410

Current hierarchy: **Bartley Eppie R → Flatwoods Coal Company Inc → No 1**

- 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:** Childers Daniel G → No 1; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Two Rose Coal Company Inc → No 1; 1985-10-01 to 1989-02-27; source msha-controller-operator-history
- **controller_controls_operator:** Childers Daniel G → Two Rose Coal Company Inc; 1985-10-01 to 1989-02-27; source msha-controller-operator-history
- **operator_operates_mine:** Flatwoods Coal Company Inc → No 1; 1989-02-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bartley Eppie R → No 1; 1989-02-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bartley Eppie R → Flatwoods Coal Company Inc; 1989-02-28 to current/open; source msha-controller-operator-history