# Relationship history for MSHA mine 1512097

Current hierarchy: **Banks Dennis → K-Nab Inc → No 1 Mine (D)**

- 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:** Hall Charles & Hobert Webb Sr → No 1 Mine (D); 1977-10-01 to 1981-07-27; source msha-controller-operator-history
- **operator_operates_mine:** Sandy Lynn Coal Company Inc → No 1 Mine (D); 1979-10-01 to 1981-04-02; source msha-controller-operator-history
- **controller_controls_operator:** Hall Charles & Hobert Webb Sr → Sandy Lynn Coal Company Inc; 1979-10-01 to 1981-04-02; source msha-controller-operator-history
- **controller_controls_mine:** Daniel Paul E → No 1 Mine (D); 1981-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Paul Daniel Coal Company → No 1 Mine (D); 1981-04-03 to 1981-07-06; source msha-controller-operator-history
- **controller_controls_operator:** Daniel Paul E → Paul Daniel Coal Company; 1981-04-03 to 1981-07-06; source msha-controller-operator-history
- **operator_operates_mine:** K-Nab Inc → No 1 Mine (D); 1981-07-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Banks Dennis → No 1 Mine (D); 1981-07-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Banks Dennis → K-Nab Inc; 1981-07-07 to current/open; source msha-controller-operator-history