# Relationship history for MSHA mine 3606714

Current hierarchy: **Hanna Michael → Hanna & Solomon Coal Company Inc → Tarr Strip**

- 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:** Lovrich Ronald & Wendell Charles → Tarr Strip; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Solomon George & George Teslovich → Tarr Strip; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Solomon & Teslovich → Tarr Strip; 1978-06-01 to 1979-02-09; source msha-controller-operator-history
- **controller_controls_operator:** Solomon George & George Teslovich → Solomon & Teslovich; 1978-06-01 to 1979-02-09; source msha-controller-operator-history
- **operator_operates_mine:** Rondell Company → Tarr Strip; 1979-02-10 to 1979-04-04; source msha-controller-operator-history
- **controller_controls_operator:** Lovrich Ronald & Wendell Charles → Rondell Company; 1979-02-10 to 1979-04-04; source msha-controller-operator-history
- **operator_operates_mine:** Solomon & Teslovich → Tarr Strip; 1979-04-05 to 1979-05-14; source msha-controller-operator-history
- **controller_controls_operator:** Solomon George & George Teslovich → Solomon & Teslovich; 1979-04-05 to 1979-05-14; source msha-controller-operator-history
- **operator_operates_mine:** Hanna & Solomon Coal Company Inc → Tarr Strip; 1979-05-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hanna Michael → Tarr Strip; 1979-05-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hanna Michael → Hanna & Solomon Coal Company Inc; 1979-05-15 to current/open; source msha-controller-operator-history