# Relationship history for MSHA mine 4607164

Current hierarchy: **Milam Theda → A & A Energy Inc → Timco Mine**

- 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:** Timco Energy Inc → Timco Mine; 1986-07-01 to 1986-09-10; source msha-controller-operator-history
- **controller_controls_mine:** Addair Tim → Timco Mine; 1986-07-01 to 1986-09-10; source msha-controller-operator-history
- **controller_controls_operator:** Addair Tim → Timco Energy Inc; 1986-07-01 to 1986-09-10; source msha-controller-operator-history
- **operator_operates_mine:** Timco Energy Inc → Timco Mine; 1986-09-11 to 1987-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Addair Glenn A → Timco Mine; 1986-09-11 to 1987-03-31; source msha-controller-operator-history
- **controller_controls_operator:** Addair Glenn A → Timco Energy Inc; 1986-09-11 to 1987-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Timco Energy Inc → Timco Mine; 1987-04-01 to 1990-06-26; source msha-controller-operator-history
- **controller_controls_mine:** Edward A  Asbury → Timco Mine; 1987-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Edward A  Asbury → Timco Energy Inc; 1987-04-01 to 1990-06-26; source msha-controller-operator-history
- **operator_operates_mine:** A & A Energy Inc → Timco Mine; 1990-06-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Milam Theda → Timco Mine; 1990-06-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Milam Theda → A & A Energy Inc; 1990-06-27 to current/open; source msha-controller-operator-history