# Relationship history for MSHA mine 0800729

Current hierarchy: **John G  Grubbs → Sun West Acquisition Corp → Sun West 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:** Sun West Inc → Sun West Mine; 1950-01-01 to 1999-01-19; source msha-controller-operator-history
- **controller_controls_mine:** Bill  Hunt → Sun West Mine; 1950-01-01 to 1999-01-19; source msha-controller-operator-history
- **controller_controls_operator:** Bill  Hunt → Sun West Inc; 1950-01-01 to 1999-01-19; source msha-controller-operator-history
- **operator_operates_mine:** Sun West Acquisition Corp → Sun West Mine; 1999-01-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John G  Grubbs → Sun West Mine; 1999-01-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John G  Grubbs → Sun West Acquisition Corp; 1999-01-20 to current/open; source msha-controller-operator-history