# Relationship history for MSHA mine 4400749

Current hierarchy: **Whited Ted → T Coal Company Inc → Mine 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:** Whited Donald & Mason → Mine No 1; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Meadows Coal Company → Mine No 1; 1950-01-01 to 1982-03-03; source msha-controller-operator-history
- **controller_controls_mine:** Meadows Sherman → Mine No 1; 1950-01-01 to 1982-03-03; source msha-controller-operator-history
- **controller_controls_operator:** Meadows Sherman → Meadows Coal Company; 1950-01-01 to 1982-03-03; source msha-controller-operator-history
- **operator_operates_mine:** Street & Whited Coal Company Inc → Mine No 1; 1982-03-04 to 1988-04-04; source msha-controller-operator-history
- **controller_controls_operator:** Whited Donald & Mason → Street & Whited Coal Company Inc; 1982-03-04 to 1988-04-04; source msha-controller-operator-history
- **operator_operates_mine:** T Coal Company Inc → Mine No 1; 1988-04-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Whited Ted → Mine No 1; 1988-04-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Whited Ted → T Coal Company Inc; 1988-04-05 to current/open; source msha-controller-operator-history