# Relationship history for MSHA mine 1516688

Current hierarchy: **Hall Virginia Rose → Green Branch Development → Green Branch Development**

- 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:** Green Branch Development → Green Branch Development; 1989-08-01 to 1991-11-14; source msha-controller-operator-history
- **controller_controls_mine:** Caudill Jack → Green Branch Development; 1989-08-01 to 1991-11-14; source msha-controller-operator-history
- **controller_controls_operator:** Caudill Jack → Green Branch Development; 1989-08-01 to 1991-11-14; source msha-controller-operator-history
- **operator_operates_mine:** Willie Reynolds → Green Branch Development; 1991-11-15 to 1992-03-30; source msha-controller-operator-history
- **controller_controls_mine:** Reynolds Willie → Green Branch Development; 1991-11-15 to 1992-03-30; source msha-controller-operator-history
- **controller_controls_operator:** Reynolds Willie → Willie Reynolds; 1991-11-15 to 1992-03-30; source msha-controller-operator-history
- **operator_operates_mine:** Green Branch Development → Green Branch Development; 1992-03-31 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hall Virginia Rose → Green Branch Development; 1992-03-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hall Virginia Rose → Green Branch Development; 1992-03-31 to current/open; source msha-controller-operator-history