# Relationship history for MSHA mine 1508235

Current hierarchy: **Childers Jack & John Eversole → Long Branch Collieries Inc → No 4 Surface**

- 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:** Lewis Lonnie B & Estill Blair → No 4 Surface; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lonnie Lewis Coal Company Inc → No 4 Surface; 1975-01-01 to 1978-06-14; source msha-controller-operator-history
- **controller_controls_operator:** Lewis Lonnie B & Estill Blair → Lonnie Lewis Coal Company Inc; 1975-01-01 to 1978-06-14; source msha-controller-operator-history
- **controller_controls_mine:** Childers Jack & John Eversole → No 4 Surface; 1976-01-20 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Long Branch Collieries Inc → No 4 Surface; 1978-06-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Childers Jack & John Eversole → Long Branch Collieries Inc; 1978-06-15 to current/open; source msha-controller-operator-history