# Relationship history for MSHA mine 1518146

Current hierarchy: **Joe D  Thacker; Oscar  Hatten → H & T Coal Company → 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:** Milford T  Compton → No 1; 1998-06-01 to 2001-05-08; source msha-controller-operator-history
- **controller_controls_mine:** Dean  Francis → No 1; 1998-09-23 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Little Man Mining Inc → No 1; 1999-03-01 to 2000-04-23; source msha-controller-operator-history
- **controller_controls_operator:** Dean  Francis → Little Man Mining Inc; 1999-03-01 to 2000-04-23; source msha-controller-operator-history
- **operator_operates_mine:** Twin Star Mining Corp → No 1; 2000-04-24 to 2000-08-23; source msha-controller-operator-history
- **controller_controls_operator:** Milford T  Compton → Twin Star Mining Corp; 2000-04-24 to 2000-08-23; source msha-controller-operator-history
- **operator_operates_mine:** H & T Coal Company → No 1; 2000-08-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Joe D  Thacker et al → No 1; 2000-08-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joe D  Thacker et al → H & T Coal Company; 2000-08-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Oscar  Hatten  et al → H & T Coal Company; 2000-08-24 to current/open; source msha-controller-operator-history