# Relationship history for MSHA mine 1502805

Current hierarchy: **Williams Jackie Ray → Ray Williams Coal Co → No 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

- **operator_operates_mine:** Long Branch Coal Co → No 2; 1950-01-01 to 1976-02-18; source msha-controller-operator-history
- **controller_controls_mine:** Childers Jack & John Eversole → No 2; 1950-01-01 to 1976-02-18; source msha-controller-operator-history
- **controller_controls_operator:** Childers Jack & John Eversole → Long Branch Coal Co; 1950-01-01 to 1976-02-18; source msha-controller-operator-history
- **controller_controls_mine:** Williams Jackie Ray → No 2; 1975-02-27 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ray Williams Coal Co → No 2; 1976-02-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Williams Jackie Ray → Ray Williams Coal Co; 1976-02-19 to current/open; source msha-controller-operator-history