# Relationship history for MSHA mine 4607741

Current hierarchy: **Larry  Stacy → Larry Stacy Augering Inc → Harmon Branch 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:** Ted  Osborne  et al → Harmon Branch Auger; 1988-09-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Gary Coal Sales Inc → Harmon Branch Auger; 1989-08-01 to 1989-08-23; source msha-controller-operator-history
- **controller_controls_operator:** Ted  Osborne  et al → Gary Coal Sales Inc; 1989-08-01 to 1989-08-23; source msha-controller-operator-history
- **operator_operates_mine:** Daniels Auger Company Inc → Harmon Branch Auger; 1989-08-24 to 1992-02-12; source msha-controller-operator-history
- **controller_controls_mine:** Whitt Phillip D Ii → Harmon Branch Auger; 1989-08-24 to 1992-02-12; source msha-controller-operator-history
- **controller_controls_operator:** Whitt Phillip D Ii → Daniels Auger Company Inc; 1989-08-24 to 1992-02-12; source msha-controller-operator-history
- **operator_operates_mine:** Larry Stacy Augering Inc → Harmon Branch Auger; 1992-02-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Larry  Stacy → Harmon Branch Auger; 1992-02-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Larry  Stacy → Larry Stacy Augering Inc; 1992-02-13 to current/open; source msha-controller-operator-history