# Relationship history for MSHA mine 3601262

Current hierarchy: **Joseph L  Waroquier Jr; Gary V  Waroquier → Tamburlin Brothers Coal Company Inc → Tamburlin 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

- **operator_operates_mine:** Tamburlin Brothers Coal Co Inc → Tamburlin Strip; 1950-01-01 to 1996-07-10; source msha-controller-operator-history
- **controller_controls_mine:** Gary L  Tamburlin → Tamburlin Strip; 1950-01-01 to 1996-07-10; source msha-controller-operator-history
- **controller_controls_operator:** Gary L  Tamburlin → Tamburlin Brothers Coal Co Inc; 1950-01-01 to 1996-07-10; source msha-controller-operator-history
- **operator_operates_mine:** Tamburlin Brothers Coal Company Inc → Tamburlin Strip; 1996-07-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Gary V  Waroquier Et Al → Tamburlin Strip; 1996-07-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gary V  Waroquier Et Al → Tamburlin Brothers Coal Company Inc; 1996-07-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joseph L  Waroquier Jr Et Al → Tamburlin Brothers Coal Company Inc; 1996-07-11 to current/open; source msha-controller-operator-history