# Relationship history for MSHA mine 4002010

Current hierarchy: **Cantrell Betty → H U B → #1 Tipple**

- 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:** Cantrell Howard R → #1 Tipple; 1974-11-21 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Big H Coal Company Inc → #1 Tipple; 1976-01-01 to 1980-12-09; source msha-controller-operator-history
- **controller_controls_operator:** Cantrell Howard R → Big H Coal Company Inc; 1976-01-01 to 1980-12-09; source msha-controller-operator-history
- **operator_operates_mine:** Shannon Coal Company Inc → #1 Tipple; 1980-12-10 to 1984-04-04; source msha-controller-operator-history
- **controller_controls_mine:** Coleman James → #1 Tipple; 1980-12-10 to 1984-04-04; source msha-controller-operator-history
- **controller_controls_operator:** Coleman James → Shannon Coal Company Inc; 1980-12-10 to 1984-04-04; source msha-controller-operator-history
- **operator_operates_mine:** C & L Processing → #1 Tipple; 1984-04-05 to 1985-10-30; source msha-controller-operator-history
- **controller_controls_mine:** Lambdin Richard & Howard Cantrell → #1 Tipple; 1984-04-05 to 1985-10-30; source msha-controller-operator-history
- **controller_controls_operator:** Lambdin Richard & Howard Cantrell → C & L Processing; 1984-04-05 to 1985-10-30; source msha-controller-operator-history
- **operator_operates_mine:** H U B → #1 Tipple; 1985-10-31 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cantrell Betty → #1 Tipple; 1985-10-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cantrell Betty → H U B; 1985-10-31 to current/open; source msha-controller-operator-history