# Relationship history for MSHA mine 4406023

Current hierarchy: **Whited Ted → T Coal Company Inc → Mine No 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:** J & A Mining Inc → Mine No 2; 1983-09-01 to 1988-10-24; source msha-controller-operator-history
- **controller_controls_mine:** Richardson Jerry Et Al → Mine No 2; 1983-09-01 to 1988-10-24; source msha-controller-operator-history
- **controller_controls_operator:** Richardson Jerry Et Al → J & A Mining Inc; 1983-09-01 to 1988-10-24; source msha-controller-operator-history
- **controller_controls_mine:** Whited Ted → Mine No 2; 1988-04-05 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** T Coal Company Inc → Mine No 2; 1988-10-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Whited Ted → T Coal Company Inc; 1988-10-25 to current/open; source msha-controller-operator-history