# Relationship history for MSHA mine 4608898

Current hierarchy: **David A  Betscher; Bobby J  Adkins → B & A Excavating, Inc. → Gary Auger**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Leroy  Stear → Gary Auger; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bobby J  Adkins et al → Gary Auger; 2001-03-26 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Stear Auger Mining Inc → Gary Auger; 2001-05-01 to 2002-06-02; source msha-controller-operator-history
- **controller_controls_operator:** Leroy  Stear → Stear Auger Mining Inc; 2001-05-01 to 2002-06-02; source msha-controller-operator-history
- **operator_operates_mine:** B & A Excavating, Inc. → Gary Auger; 2002-06-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bobby J  Adkins et al → B & A Excavating, Inc.; 2002-06-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David A  Betscher et al → B & A Excavating, Inc.; 2002-06-03 to current/open; source msha-controller-operator-history