# Relationship history for MSHA mine 3400897

Current hierarchy: **Turner Charles Richard → Tiger Industrial Transportation Systems Inc → White Oak 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

- **operator_operates_mine:** Elco Inc → White Oak Tipple; 1975-01-01 to 1982-10-09; source msha-controller-operator-history
- **controller_controls_mine:** Wilson William N → White Oak Tipple; 1975-01-01 to 1982-10-09; source msha-controller-operator-history
- **controller_controls_operator:** Wilson William N → Elco Inc; 1975-01-01 to 1982-10-09; source msha-controller-operator-history
- **operator_operates_mine:** Four-T Inc → White Oak Tipple; 1982-10-10 to 1985-06-23; source msha-controller-operator-history
- **controller_controls_mine:** Turner Charles Richard-William Tom Turner Et Al → White Oak Tipple; 1982-10-10 to 1985-06-23; source msha-controller-operator-history
- **controller_controls_operator:** Turner Charles Richard-William Tom Turner Et Al → Four-T Inc; 1982-10-10 to 1985-06-23; source msha-controller-operator-history
- **operator_operates_mine:** Tiger Industrial Transportation Systems Inc → White Oak Tipple; 1985-06-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Turner Charles Richard → White Oak Tipple; 1985-06-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Turner Charles Richard → Tiger Industrial Transportation Systems Inc; 1985-06-24 to current/open; source msha-controller-operator-history