# Relationship history for MSHA mine 4402742

Current hierarchy: **Benjamin R.  Bennett → Rb Coal Company Inc → Tipple #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:** T & T Darby Coal Company Inc → Tipple #2; 1950-01-01 to 1972-10-21; source msha-controller-operator-history
- **controller_controls_mine:** Jones Dean → Tipple #2; 1950-01-01 to 1972-10-21; source msha-controller-operator-history
- **controller_controls_operator:** Jones Dean → T & T Darby Coal Company Inc; 1950-01-01 to 1972-10-21; source msha-controller-operator-history
- **controller_controls_mine:** Charles D  Litton → Tipple #2; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** St Charles Processing Company Inc → Tipple #2; 1972-10-22 to 1981-10-18; source msha-controller-operator-history
- **controller_controls_mine:** Charles D  Litton → Tipple #2; 1972-10-22 to 1981-10-18; source msha-controller-operator-history
- **controller_controls_operator:** Charles D  Litton → St Charles Processing Company Inc; 1972-10-22 to 1981-10-18; source msha-controller-operator-history
- **controller_controls_mine:** Benjamin R.  Bennett → Tipple #2; 1979-11-29 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Americoal Corp & Associates Of Va Ltd → Tipple #2; 1981-10-19 to 1985-10-09; source msha-controller-operator-history
- **controller_controls_mine:** Americoal Corp & Associates Of Va Ltd → Tipple #2; 1981-10-19 to 1985-10-09; source msha-controller-operator-history
- **controller_controls_operator:** Americoal Corp & Associates Of Va Ltd → Americoal Corp & Associates Of Va Ltd; 1981-10-19 to 1985-10-09; source msha-controller-operator-history
- **operator_operates_mine:** T & T Darby Coal Company Inc → Tipple #2; 1985-10-10 to 1987-05-06; source msha-controller-operator-history
- **controller_controls_operator:** Charles D  Litton → T & T Darby Coal Company Inc; 1985-10-10 to 1987-05-06; source msha-controller-operator-history
- **operator_operates_mine:** Rb Coal Company Inc → Tipple #2; 1987-05-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Benjamin R.  Bennett → Rb Coal Company Inc; 1987-05-07 to current/open; source msha-controller-operator-history